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Finding the Fourth Proportional to 630,246.80, 945,370.20 and 453,099.80

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Solution

The fourth proportional to 630,246.80, 945,370.20 and 453,099.80 is: 679,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,246.80 : 945,370.20 = 453,099.80 : x
  2. Step 2: Convert to fraction form
    630,246.80/945,370.20 = 453,099.80/x
  3. Step 3: Cross multiply
    630,246.80x = 945,370.20 × 453,099.80
  4. Step 4: Simplify right side
    630,246.80x = 428,347,048,545.96
  5. Step 5: Solve for x
    x = 428,347,048,545.96/630,246.80
  6. Step 6: Final answer
    x = 679,649.70

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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.