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Finding the Fourth Proportional to 566,561.43, 781,825.10 and 311,862.87

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Solution

The fourth proportional to 566,561.43, 781,825.10 and 311,862.87 is: 430,354.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,561.43 : 781,825.10 = 311,862.87 : x
  2. Step 2: Convert to fraction form
    566,561.43/781,825.10 = 311,862.87/x
  3. Step 3: Cross multiply
    566,561.43x = 781,825.10 × 311,862.87
  4. Step 4: Simplify right side
    566,561.43x = 243,822,217,964.72
  5. Step 5: Solve for x
    x = 243,822,217,964.72/566,561.43
  6. Step 6: Final answer
    x = 430,354.42

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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.