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Finding the Fourth Proportional to 712,801.20, 1,069,201.38 and 665,562

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Solution

The fourth proportional to 712,801.20, 1,069,201.38 and 665,562 is: 998,342.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,801.20 : 1,069,201.38 = 665,562 : x
  2. Step 2: Convert to fraction form
    712,801.20/1,069,201.38 = 665,562/x
  3. Step 3: Cross multiply
    712,801.20x = 1,069,201.38 × 665,562
  4. Step 4: Simplify right side
    712,801.20x = 711,619,808,875.56
  5. Step 5: Solve for x
    x = 711,619,808,875.56/712,801.20
  6. Step 6: Final answer
    x = 998,342.61

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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.