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Finding the Fourth Proportional to 522,136.10, 783,204.15 and 490,643.30

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Solution

The fourth proportional to 522,136.10, 783,204.15 and 490,643.30 is: 735,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,136.10 : 783,204.15 = 490,643.30 : x
  2. Step 2: Convert to fraction form
    522,136.10/783,204.15 = 490,643.30/x
  3. Step 3: Cross multiply
    522,136.10x = 783,204.15 × 490,643.30
  4. Step 4: Simplify right side
    522,136.10x = 384,273,868,729.70
  5. Step 5: Solve for x
    x = 384,273,868,729.70/522,136.10
  6. Step 6: Final answer
    x = 735,964.95

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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.