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Finding the Fourth Proportional to 680,036.18, 938,412.81 and 374,063.18

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Solution

The fourth proportional to 680,036.18, 938,412.81 and 374,063.18 is: 516,186.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,036.18 : 938,412.81 = 374,063.18 : x
  2. Step 2: Convert to fraction form
    680,036.18/938,412.81 = 374,063.18/x
  3. Step 3: Cross multiply
    680,036.18x = 938,412.81 × 374,063.18
  4. Step 4: Simplify right side
    680,036.18x = 351,025,675,169.27
  5. Step 5: Solve for x
    x = 351,025,675,169.27/680,036.18
  6. Step 6: Final answer
    x = 516,186.77

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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.