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Finding the Fourth Proportional to 522,132.60, 783,198.90 and 490,639.80

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Solution

The fourth proportional to 522,132.60, 783,198.90 and 490,639.80 is: 735,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,132.60 : 783,198.90 = 490,639.80 : x
  2. Step 2: Convert to fraction form
    522,132.60/783,198.90 = 490,639.80/x
  3. Step 3: Cross multiply
    522,132.60x = 783,198.90 × 490,639.80
  4. Step 4: Simplify right side
    522,132.60x = 384,268,551,656.22
  5. Step 5: Solve for x
    x = 384,268,551,656.22/522,132.60
  6. Step 6: Final answer
    x = 735,959.70

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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.