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Finding the Fourth Proportional to 566,285.13, 781,472.95 and 311,636.32

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Solution

The fourth proportional to 566,285.13, 781,472.95 and 311,636.32 is: 430,057.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,285.13 : 781,472.95 = 311,636.32 : x
  2. Step 2: Convert to fraction form
    566,285.13/781,472.95 = 311,636.32/x
  3. Step 3: Cross multiply
    566,285.13x = 781,472.95 × 311,636.32
  4. Step 4: Simplify right side
    566,285.13x = 243,535,351,584.77
  5. Step 5: Solve for x
    x = 243,535,351,584.77/566,285.13
  6. Step 6: Final answer
    x = 430,057.83

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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.