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Finding the Fourth Proportional to 680,089.69, 938,523.72 and 374,159.50

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Solution

The fourth proportional to 680,089.69, 938,523.72 and 374,159.50 is: 516,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,089.69 : 938,523.72 = 374,159.50 : x
  2. Step 2: Convert to fraction form
    680,089.69/938,523.72 = 374,159.50/x
  3. Step 3: Cross multiply
    680,089.69x = 938,523.72 × 374,159.50
  4. Step 4: Simplify right side
    680,089.69x = 351,157,564,870.13
  5. Step 5: Solve for x
    x = 351,157,564,870.13/680,089.69
  6. Step 6: Final answer
    x = 516,340.08

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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.