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Finding the Fourth Proportional to 418,527.60, 627,791.40 and 292,556.40

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Solution

The fourth proportional to 418,527.60, 627,791.40 and 292,556.40 is: 438,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,527.60 : 627,791.40 = 292,556.40 : x
  2. Step 2: Convert to fraction form
    418,527.60/627,791.40 = 292,556.40/x
  3. Step 3: Cross multiply
    418,527.60x = 627,791.40 × 292,556.40
  4. Step 4: Simplify right side
    418,527.60x = 183,664,391,934.96
  5. Step 5: Solve for x
    x = 183,664,391,934.96/418,527.60
  6. Step 6: Final answer
    x = 438,834.60

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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.