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Finding the Fourth Proportional to 490,423.20, 735,634.80 and 437,546.40

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Solution

The fourth proportional to 490,423.20, 735,634.80 and 437,546.40 is: 656,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,423.20 : 735,634.80 = 437,546.40 : x
  2. Step 2: Convert to fraction form
    490,423.20/735,634.80 = 437,546.40/x
  3. Step 3: Cross multiply
    490,423.20x = 735,634.80 × 437,546.40
  4. Step 4: Simplify right side
    490,423.20x = 321,874,358,454.72
  5. Step 5: Solve for x
    x = 321,874,358,454.72/490,423.20
  6. Step 6: Final answer
    x = 656,319.60

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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.