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Finding the Fourth Proportional to 653,702.40, 980,901.90 and 254,356.20

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Solution

The fourth proportional to 653,702.40, 980,901.90 and 254,356.20 is: 381,669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,702.40 : 980,901.90 = 254,356.20 : x
  2. Step 2: Convert to fraction form
    653,702.40/980,901.90 = 254,356.20/x
  3. Step 3: Cross multiply
    653,702.40x = 980,901.90 × 254,356.20
  4. Step 4: Simplify right side
    653,702.40x = 249,498,479,856.78
  5. Step 5: Solve for x
    x = 249,498,479,856.78/653,702.40
  6. Step 6: Final answer
    x = 381,669.82

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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.