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Finding the Fourth Proportional to 457,807.20, 686,710.80 and 383,011.80

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Solution

The fourth proportional to 457,807.20, 686,710.80 and 383,011.80 is: 574,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,807.20 : 686,710.80 = 383,011.80 : x
  2. Step 2: Convert to fraction form
    457,807.20/686,710.80 = 383,011.80/x
  3. Step 3: Cross multiply
    457,807.20x = 686,710.80 × 383,011.80
  4. Step 4: Simplify right side
    457,807.20x = 263,018,339,587.44
  5. Step 5: Solve for x
    x = 263,018,339,587.44/457,807.20
  6. Step 6: Final answer
    x = 574,517.70

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Similar ratio
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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.