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Finding the Fourth Proportional to 586,615.29, 809,529.10 and 318,343.29

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Solution

The fourth proportional to 586,615.29, 809,529.10 and 318,343.29 is: 439,313.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,615.29 : 809,529.10 = 318,343.29 : x
  2. Step 2: Convert to fraction form
    586,615.29/809,529.10 = 318,343.29/x
  3. Step 3: Cross multiply
    586,615.29x = 809,529.10 × 318,343.29
  4. Step 4: Simplify right side
    586,615.29x = 257,708,155,937.61
  5. Step 5: Solve for x
    x = 257,708,155,937.61/586,615.29
  6. Step 6: Final answer
    x = 439,313.74

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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.