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Finding the Fourth Proportional to 625,689, 864,163.62 and 424,135.08

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Solution

The fourth proportional to 625,689, 864,163.62 and 424,135.08 is: 585,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,689 : 864,163.62 = 424,135.08 : x
  2. Step 2: Convert to fraction form
    625,689/864,163.62 = 424,135.08/x
  3. Step 3: Cross multiply
    625,689x = 864,163.62 × 424,135.08
  4. Step 4: Simplify right side
    625,689x = 366,522,106,101.79
  5. Step 5: Solve for x
    x = 366,522,106,101.79/625,689
  6. Step 6: Final answer
    x = 585,789.60

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1.5x scale

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.