Home / 653,507.12-980,321.15-254,178.20

Finding the Fourth Proportional to 653,507.12, 980,321.15 and 254,178.20

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Solution

The fourth proportional to 653,507.12, 980,321.15 and 254,178.20 is: 381,290.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,507.12 : 980,321.15 = 254,178.20 : x
  2. Step 2: Convert to fraction form
    653,507.12/980,321.15 = 254,178.20/x
  3. Step 3: Cross multiply
    653,507.12x = 980,321.15 × 254,178.20
  4. Step 4: Simplify right side
    653,507.12x = 249,176,261,062.77
  5. Step 5: Solve for x
    x = 249,176,261,062.77/653,507.12
  6. Step 6: Final answer
    x = 381,290.82

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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.