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Finding the Fourth Proportional to 653,506.87, 980,320.78 and 254,177.95

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Solution

The fourth proportional to 653,506.87, 980,320.78 and 254,177.95 is: 381,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,506.87 : 980,320.78 = 254,177.95 : x
  2. Step 2: Convert to fraction form
    653,506.87/980,320.78 = 254,177.95/x
  3. Step 3: Cross multiply
    653,506.87x = 980,320.78 × 254,177.95
  4. Step 4: Simplify right side
    653,506.87x = 249,175,921,301.20
  5. Step 5: Solve for x
    x = 249,175,921,301.20/653,506.87
  6. Step 6: Final answer
    x = 381,290.44

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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.