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Finding the Fourth Proportional to 680,063.39, 938,487.46 and 374,133.20

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Solution

The fourth proportional to 680,063.39, 938,487.46 and 374,133.20 is: 516,303.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,063.39 : 938,487.46 = 374,133.20 : x
  2. Step 2: Convert to fraction form
    680,063.39/938,487.46 = 374,133.20/x
  3. Step 3: Cross multiply
    680,063.39x = 938,487.46 × 374,133.20
  4. Step 4: Simplify right side
    680,063.39x = 351,119,316,569.67
  5. Step 5: Solve for x
    x = 351,119,316,569.67/680,063.39
  6. Step 6: Final answer
    x = 516,303.81

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1.5x scale

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.