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Finding the Fourth Proportional to 704,585.52, 972,315.45 and 428,843.61

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Solution

The fourth proportional to 704,585.52, 972,315.45 and 428,843.61 is: 591,796.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,585.52 : 972,315.45 = 428,843.61 : x
  2. Step 2: Convert to fraction form
    704,585.52/972,315.45 = 428,843.61/x
  3. Step 3: Cross multiply
    704,585.52x = 972,315.45 × 428,843.61
  4. Step 4: Simplify right side
    704,585.52x = 416,971,267,636.78
  5. Step 5: Solve for x
    x = 416,971,267,636.78/704,585.52
  6. Step 6: Final answer
    x = 591,796.53

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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.