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Finding the Fourth Proportional to 544,522.40, 815,228.40 and 488,535.20

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Solution

The fourth proportional to 544,522.40, 815,228.40 and 488,535.20 is: 731,407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,522.40 : 815,228.40 = 488,535.20 : x
  2. Step 2: Convert to fraction form
    544,522.40/815,228.40 = 488,535.20/x
  3. Step 3: Cross multiply
    544,522.40x = 815,228.40 × 488,535.20
  4. Step 4: Simplify right side
    544,522.40x = 398,267,769,439.68
  5. Step 5: Solve for x
    x = 398,267,769,439.68/544,522.40
  6. Step 6: Final answer
    x = 731,407.50

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Half scale
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Double scale
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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.