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Finding the Fourth Proportional to 566,489.52, 781,755.48 and 311,838.84

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Solution

The fourth proportional to 566,489.52, 781,755.48 and 311,838.84 is: 430,337.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,489.52 : 781,755.48 = 311,838.84 : x
  2. Step 2: Convert to fraction form
    566,489.52/781,755.48 = 311,838.84/x
  3. Step 3: Cross multiply
    566,489.52x = 781,755.48 × 311,838.84
  4. Step 4: Simplify right side
    566,489.52x = 243,781,722,046.84
  5. Step 5: Solve for x
    x = 243,781,722,046.84/566,489.52
  6. Step 6: Final answer
    x = 430,337.57

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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.