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Finding the Fourth Proportional to 708,757.62, 978,048.45 and 402,793.08

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Solution

The fourth proportional to 708,757.62, 978,048.45 and 402,793.08 is: 555,833.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,757.62 : 978,048.45 = 402,793.08 : x
  2. Step 2: Convert to fraction form
    708,757.62/978,048.45 = 402,793.08/x
  3. Step 3: Cross multiply
    708,757.62x = 978,048.45 × 402,793.08
  4. Step 4: Simplify right side
    708,757.62x = 393,951,147,564.73
  5. Step 5: Solve for x
    x = 393,951,147,564.73/708,757.62
  6. Step 6: Final answer
    x = 555,833.39

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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.