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Finding the Fourth Proportional to 566,284.53, 781,472.21 and 311,635.72

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Solution

The fourth proportional to 566,284.53, 781,472.21 and 311,635.72 is: 430,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,284.53 : 781,472.21 = 311,635.72 : x
  2. Step 2: Convert to fraction form
    566,284.53/781,472.21 = 311,635.72/x
  3. Step 3: Cross multiply
    566,284.53x = 781,472.21 × 311,635.72
  4. Step 4: Simplify right side
    566,284.53x = 243,534,654,242.00
  5. Step 5: Solve for x
    x = 243,534,654,242.00/566,284.53
  6. Step 6: Final answer
    x = 430,057.05

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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.