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Finding the Fourth Proportional to 606,387.60, 908,998.20 and 471,376.80

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Solution

The fourth proportional to 606,387.60, 908,998.20 and 471,376.80 is: 706,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,387.60 : 908,998.20 = 471,376.80 : x
  2. Step 2: Convert to fraction form
    606,387.60/908,998.20 = 471,376.80/x
  3. Step 3: Cross multiply
    606,387.60x = 908,998.20 × 471,376.80
  4. Step 4: Simplify right side
    606,387.60x = 428,480,662,721.76
  5. Step 5: Solve for x
    x = 428,480,662,721.76/606,387.60
  6. Step 6: Final answer
    x = 706,611.85

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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.