Home / 829,012.80-1,243,519.20-577,070.40

Finding the Fourth Proportional to 829,012.80, 1,243,519.20 and 577,070.40

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Solution

The fourth proportional to 829,012.80, 1,243,519.20 and 577,070.40 is: 865,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,012.80 : 1,243,519.20 = 577,070.40 : x
  2. Step 2: Convert to fraction form
    829,012.80/1,243,519.20 = 577,070.40/x
  3. Step 3: Cross multiply
    829,012.80x = 1,243,519.20 × 577,070.40
  4. Step 4: Simplify right side
    829,012.80x = 717,598,122,151.68
  5. Step 5: Solve for x
    x = 717,598,122,151.68/829,012.80
  6. Step 6: Final answer
    x = 865,605.60

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Double scale
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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.