Home / 438,327,008.40-656,232,221.40-425,744,096.40

Finding the Fourth Proportional to 438,327,008.40, 656,232,221.40 and 425,744,096.40

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Solution

The fourth proportional to 438,327,008.40, 656,232,221.40 and 425,744,096.40 is: 637,393,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,327,008.40 : 656,232,221.40 = 425,744,096.40 : x
  2. Step 2: Convert to fraction form
    438,327,008.40/656,232,221.40 = 425,744,096.40/x
  3. Step 3: Cross multiply
    438,327,008.40x = 656,232,221.40 × 425,744,096.40
  4. Step 4: Simplify right side
    438,327,008.40x = 279,386,994,128,507,712
  5. Step 5: Solve for x
    x = 279,386,994,128,507,712/438,327,008.40
  6. Step 6: Final answer
    x = 637,393,974.76

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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.