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Finding the Fourth Proportional to 410,304.72, 615,395.44 and 129,785.52

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Solution

The fourth proportional to 410,304.72, 615,395.44 and 129,785.52 is: 194,658.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,304.72 : 615,395.44 = 129,785.52 : x
  2. Step 2: Convert to fraction form
    410,304.72/615,395.44 = 129,785.52/x
  3. Step 3: Cross multiply
    410,304.72x = 615,395.44 × 129,785.52
  4. Step 4: Simplify right side
    410,304.72x = 79,869,417,186.03
  5. Step 5: Solve for x
    x = 79,869,417,186.03/410,304.72
  6. Step 6: Final answer
    x = 194,658.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.