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Finding the Fourth Proportional to 679,967.53, 938,318.25 and 373,994.53

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Solution

The fourth proportional to 679,967.53, 938,318.25 and 373,994.53 is: 516,092.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,967.53 : 938,318.25 = 373,994.53 : x
  2. Step 2: Convert to fraction form
    679,967.53/938,318.25 = 373,994.53/x
  3. Step 3: Cross multiply
    679,967.53x = 938,318.25 × 373,994.53
  4. Step 4: Simplify right side
    679,967.53x = 350,925,892,899.17
  5. Step 5: Solve for x
    x = 350,925,892,899.17/679,967.53
  6. Step 6: Final answer
    x = 516,092.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.