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Finding the Fourth Proportional to 625,967.07, 864,169.47 and 489,711.57

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Solution

The fourth proportional to 625,967.07, 864,169.47 and 489,711.57 is: 676,063.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,967.07 : 864,169.47 = 489,711.57 : x
  2. Step 2: Convert to fraction form
    625,967.07/864,169.47 = 489,711.57/x
  3. Step 3: Cross multiply
    625,967.07x = 864,169.47 × 489,711.57
  4. Step 4: Simplify right side
    625,967.07x = 423,193,787,899.77
  5. Step 5: Solve for x
    x = 423,193,787,899.77/625,967.07
  6. Step 6: Final answer
    x = 676,063.98

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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.