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Finding the Fourth Proportional to 684,613.38, 944,754.81 and 378,689.52

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Solution

The fourth proportional to 684,613.38, 944,754.81 and 378,689.52 is: 522,585.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,613.38 : 944,754.81 = 378,689.52 : x
  2. Step 2: Convert to fraction form
    684,613.38/944,754.81 = 378,689.52/x
  3. Step 3: Cross multiply
    684,613.38x = 944,754.81 × 378,689.52
  4. Step 4: Simplify right side
    684,613.38x = 357,768,739,701.60
  5. Step 5: Solve for x
    x = 357,768,739,701.60/684,613.38
  6. Step 6: Final answer
    x = 522,585.08

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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.