Home / 1,248,154,312.80-1,872,231,469.20-635,934,280.80

Finding the Fourth Proportional to 1,248,154,312.80, 1,872,231,469.20 and 635,934,280.80

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Solution

The fourth proportional to 1,248,154,312.80, 1,872,231,469.20 and 635,934,280.80 is: 953,901,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,154,312.80 : 1,872,231,469.20 = 635,934,280.80 : x
  2. Step 2: Convert to fraction form
    1,248,154,312.80/1,872,231,469.20 = 635,934,280.80/x
  3. Step 3: Cross multiply
    1,248,154,312.80x = 1,872,231,469.20 × 635,934,280.80
  4. Step 4: Simplify right side
    1,248,154,312.80x = 1,190,616,172,856,829,184
  5. Step 5: Solve for x
    x = 1,190,616,172,856,829,184/1,248,154,312.80
  6. Step 6: Final answer
    x = 953,901,421.20

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Half scale
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Double scale
Find fourth proportional to 1,248,154,313.80, 1,872,231,470.70 and 635,934,281.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.