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Finding the Fourth Proportional to 609,514.40, 912,716.40 and 485,098.40

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Solution

The fourth proportional to 609,514.40, 912,716.40 and 485,098.40 is: 726,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,514.40 : 912,716.40 = 485,098.40 : x
  2. Step 2: Convert to fraction form
    609,514.40/912,716.40 = 485,098.40/x
  3. Step 3: Cross multiply
    609,514.40x = 912,716.40 × 485,098.40
  4. Step 4: Simplify right side
    609,514.40x = 442,757,265,293.76
  5. Step 5: Solve for x
    x = 442,757,265,293.76/609,514.40
  6. Step 6: Final answer
    x = 726,409.85

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1.5x scale

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.