Home / 747,648,000.80-1,121,472,001.20-425,161,728.80

Finding the Fourth Proportional to 747,648,000.80, 1,121,472,001.20 and 425,161,728.80

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Solution

The fourth proportional to 747,648,000.80, 1,121,472,001.20 and 425,161,728.80 is: 637,742,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,648,000.80 : 1,121,472,001.20 = 425,161,728.80 : x
  2. Step 2: Convert to fraction form
    747,648,000.80/1,121,472,001.20 = 425,161,728.80/x
  3. Step 3: Cross multiply
    747,648,000.80x = 1,121,472,001.20 × 425,161,728.80
  4. Step 4: Simplify right side
    747,648,000.80x = 476,806,974,830,987,712
  5. Step 5: Solve for x
    x = 476,806,974,830,987,712/747,648,000.80
  6. Step 6: Final answer
    x = 637,742,593.20

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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.