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Finding the Fourth Proportional to 477,974.80, 716,962.20 and 328,675.60

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Solution

The fourth proportional to 477,974.80, 716,962.20 and 328,675.60 is: 493,013.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,974.80 : 716,962.20 = 328,675.60 : x
  2. Step 2: Convert to fraction form
    477,974.80/716,962.20 = 328,675.60/x
  3. Step 3: Cross multiply
    477,974.80x = 716,962.20 × 328,675.60
  4. Step 4: Simplify right side
    477,974.80x = 235,647,981,262.32
  5. Step 5: Solve for x
    x = 235,647,981,262.32/477,974.80
  6. Step 6: Final answer
    x = 493,013.40

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Similar ratio
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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.