Home / 438,326,792.40-656,231,897.40-425,743,880.40

Finding the Fourth Proportional to 438,326,792.40, 656,231,897.40 and 425,743,880.40

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Solution

The fourth proportional to 438,326,792.40, 656,231,897.40 and 425,743,880.40 is: 637,393,650.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,326,792.40 : 656,231,897.40 = 425,743,880.40 : x
  2. Step 2: Convert to fraction form
    438,326,792.40/656,231,897.40 = 425,743,880.40/x
  3. Step 3: Cross multiply
    438,326,792.40x = 656,231,897.40 × 425,743,880.40
  4. Step 4: Simplify right side
    438,326,792.40x = 279,386,714,441,330,656
  5. Step 5: Solve for x
    x = 279,386,714,441,330,656/438,326,792.40
  6. Step 6: Final answer
    x = 637,393,650.78

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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.