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Finding the Fourth Proportional to 708,866.46, 978,311.61 and 433,385.96

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Solution

The fourth proportional to 708,866.46, 978,311.61 and 433,385.96 is: 598,119.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,866.46 : 978,311.61 = 433,385.96 : x
  2. Step 2: Convert to fraction form
    708,866.46/978,311.61 = 433,385.96/x
  3. Step 3: Cross multiply
    708,866.46x = 978,311.61 × 433,385.96
  4. Step 4: Simplify right side
    708,866.46x = 423,986,511,387.44
  5. Step 5: Solve for x
    x = 423,986,511,387.44/708,866.46
  6. Step 6: Final answer
    x = 598,119.02

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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.