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Finding the Fourth Proportional to 474,467.10, 711,700.65 and 430,143.90

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Solution

The fourth proportional to 474,467.10, 711,700.65 and 430,143.90 is: 645,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,467.10 : 711,700.65 = 430,143.90 : x
  2. Step 2: Convert to fraction form
    474,467.10/711,700.65 = 430,143.90/x
  3. Step 3: Cross multiply
    474,467.10x = 711,700.65 × 430,143.90
  4. Step 4: Simplify right side
    474,467.10x = 306,133,693,223.54
  5. Step 5: Solve for x
    x = 306,133,693,223.54/474,467.10
  6. Step 6: Final answer
    x = 645,215.85

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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.