Home / 1,289,664,000.80-1,934,496,001.20-320,315,616.80

Finding the Fourth Proportional to 1,289,664,000.80, 1,934,496,001.20 and 320,315,616.80

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Solution

The fourth proportional to 1,289,664,000.80, 1,934,496,001.20 and 320,315,616.80 is: 480,473,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,664,000.80 : 1,934,496,001.20 = 320,315,616.80 : x
  2. Step 2: Convert to fraction form
    1,289,664,000.80/1,934,496,001.20 = 320,315,616.80/x
  3. Step 3: Cross multiply
    1,289,664,000.80x = 1,934,496,001.20 × 320,315,616.80
  4. Step 4: Simplify right side
    1,289,664,000.80x = 619,649,279,821,511,552
  5. Step 5: Solve for x
    x = 619,649,279,821,511,552/1,289,664,000.80
  6. Step 6: Final answer
    x = 480,473,425.20

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Half scale
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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.