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Finding the Fourth Proportional to 653,627.40, 980,789.40 and 254,281.20

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Solution

The fourth proportional to 653,627.40, 980,789.40 and 254,281.20 is: 381,557.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,627.40 : 980,789.40 = 254,281.20 : x
  2. Step 2: Convert to fraction form
    653,627.40/980,789.40 = 254,281.20/x
  3. Step 3: Cross multiply
    653,627.40x = 980,789.40 × 254,281.20
  4. Step 4: Simplify right side
    653,627.40x = 249,396,305,579.28
  5. Step 5: Solve for x
    x = 249,396,305,579.28/653,627.40
  6. Step 6: Final answer
    x = 381,557.30

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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.