Home / 425,306,721.20-637,960,081.80-399,478,688.60

Finding the Fourth Proportional to 425,306,721.20, 637,960,081.80 and 399,478,688.60

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Solution

The fourth proportional to 425,306,721.20, 637,960,081.80 and 399,478,688.60 is: 599,218,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,306,721.20 : 637,960,081.80 = 399,478,688.60 : x
  2. Step 2: Convert to fraction form
    425,306,721.20/637,960,081.80 = 399,478,688.60/x
  3. Step 3: Cross multiply
    425,306,721.20x = 637,960,081.80 × 399,478,688.60
  4. Step 4: Simplify right side
    425,306,721.20x = 254,851,456,856,612,736
  5. Step 5: Solve for x
    x = 254,851,456,856,612,736/425,306,721.20
  6. Step 6: Final answer
    x = 599,218,032.90

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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.