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Finding the Fourth Proportional to 686,765.76, 1,030,444.64 and 371,444.64

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Solution

The fourth proportional to 686,765.76, 1,030,444.64 and 371,444.64 is: 557,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,765.76 : 1,030,444.64 = 371,444.64 : x
  2. Step 2: Convert to fraction form
    686,765.76/1,030,444.64 = 371,444.64/x
  3. Step 3: Cross multiply
    686,765.76x = 1,030,444.64 × 371,444.64
  4. Step 4: Simplify right side
    686,765.76x = 382,753,138,344.73
  5. Step 5: Solve for x
    x = 382,753,138,344.73/686,765.76
  6. Step 6: Final answer
    x = 557,327.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.