Home / 756,129.20-1,134,193.80-488,440.40

Finding the Fourth Proportional to 756,129.20, 1,134,193.80 and 488,440.40

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Solution

The fourth proportional to 756,129.20, 1,134,193.80 and 488,440.40 is: 732,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,129.20 : 1,134,193.80 = 488,440.40 : x
  2. Step 2: Convert to fraction form
    756,129.20/1,134,193.80 = 488,440.40/x
  3. Step 3: Cross multiply
    756,129.20x = 1,134,193.80 × 488,440.40
  4. Step 4: Simplify right side
    756,129.20x = 553,986,073,349.52
  5. Step 5: Solve for x
    x = 553,986,073,349.52/756,129.20
  6. Step 6: Final answer
    x = 732,660.60

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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.