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Finding the Fourth Proportional to 566,118.63, 781,227.72 and 311,469.84

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Solution

The fourth proportional to 566,118.63, 781,227.72 and 311,469.84 is: 429,819.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,118.63 : 781,227.72 = 311,469.84 : x
  2. Step 2: Convert to fraction form
    566,118.63/781,227.72 = 311,469.84/x
  3. Step 3: Cross multiply
    566,118.63x = 781,227.72 × 311,469.84
  4. Step 4: Simplify right side
    566,118.63x = 243,328,872,951.97
  5. Step 5: Solve for x
    x = 243,328,872,951.97/566,118.63
  6. Step 6: Final answer
    x = 429,819.58

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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.