Home / 438,326,794.40-656,231,900.40-425,743,882.40

Finding the Fourth Proportional to 438,326,794.40, 656,231,900.40 and 425,743,882.40

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Solution

The fourth proportional to 438,326,794.40, 656,231,900.40 and 425,743,882.40 is: 637,393,653.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,326,794.40 : 656,231,900.40 = 425,743,882.40 : x
  2. Step 2: Convert to fraction form
    438,326,794.40/656,231,900.40 = 425,743,882.40/x
  3. Step 3: Cross multiply
    438,326,794.40x = 656,231,900.40 × 425,743,882.40
  4. Step 4: Simplify right side
    438,326,794.40x = 279,386,717,031,026,080
  5. Step 5: Solve for x
    x = 279,386,717,031,026,080/438,326,794.40
  6. Step 6: Final answer
    x = 637,393,653.78

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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.