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Finding the Fourth Proportional to 490,134.40, 676,572.48 and 476,651.52

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Solution

The fourth proportional to 490,134.40, 676,572.48 and 476,651.52 is: 657,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,134.40 : 676,572.48 = 476,651.52 : x
  2. Step 2: Convert to fraction form
    490,134.40/676,572.48 = 476,651.52/x
  3. Step 3: Cross multiply
    490,134.40x = 676,572.48 × 476,651.52
  4. Step 4: Simplify right side
    490,134.40x = 322,489,300,982.17
  5. Step 5: Solve for x
    x = 322,489,300,982.17/490,134.40
  6. Step 6: Final answer
    x = 657,960.96

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1.5x scale

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.