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Finding the Fourth Proportional to 680,464.89, 939,034.11 and 374,534.71

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Solution

The fourth proportional to 680,464.89, 939,034.11 and 374,534.71 is: 516,853.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,464.89 : 939,034.11 = 374,534.71 : x
  2. Step 2: Convert to fraction form
    680,464.89/939,034.11 = 374,534.71/x
  3. Step 3: Cross multiply
    680,464.89x = 939,034.11 × 374,534.71
  4. Step 4: Simplify right side
    680,464.89x = 351,700,868,068.96
  5. Step 5: Solve for x
    x = 351,700,868,068.96/680,464.89
  6. Step 6: Final answer
    x = 516,853.81

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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.