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Finding the Fourth Proportional to 625,890.60, 938,447.10 and 359,519.40

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Solution

The fourth proportional to 625,890.60, 938,447.10 and 359,519.40 is: 539,055.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,890.60 : 938,447.10 = 359,519.40 : x
  2. Step 2: Convert to fraction form
    625,890.60/938,447.10 = 359,519.40/x
  3. Step 3: Cross multiply
    625,890.60x = 938,447.10 × 359,519.40
  4. Step 4: Simplify right side
    625,890.60x = 337,389,938,323.74
  5. Step 5: Solve for x
    x = 337,389,938,323.74/625,890.60
  6. Step 6: Final answer
    x = 539,055.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.