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Finding the Fourth Proportional to 452,311.32, 681,718.14 and 389,884.89

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Solution

The fourth proportional to 452,311.32, 681,718.14 and 389,884.89 is: 587,629.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,311.32 : 681,718.14 = 389,884.89 : x
  2. Step 2: Convert to fraction form
    452,311.32/681,718.14 = 389,884.89/x
  3. Step 3: Cross multiply
    452,311.32x = 681,718.14 × 389,884.89
  4. Step 4: Simplify right side
    452,311.32x = 265,791,602,024.91
  5. Step 5: Solve for x
    x = 265,791,602,024.91/452,311.32
  6. Step 6: Final answer
    x = 587,629.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.