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Finding the Fourth Proportional to 704,686.40, 972,469.86 and 382,396.58

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Solution

The fourth proportional to 704,686.40, 972,469.86 and 382,396.58 is: 527,708.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,686.40 : 972,469.86 = 382,396.58 : x
  2. Step 2: Convert to fraction form
    704,686.40/972,469.86 = 382,396.58/x
  3. Step 3: Cross multiply
    704,686.40x = 972,469.86 × 382,396.58
  4. Step 4: Simplify right side
    704,686.40x = 371,869,148,617.08
  5. Step 5: Solve for x
    x = 371,869,148,617.08/704,686.40
  6. Step 6: Final answer
    x = 527,708.71

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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.