Home / 763,635.20-1,145,452.80-408,466.40

Finding the Fourth Proportional to 763,635.20, 1,145,452.80 and 408,466.40

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Solution

The fourth proportional to 763,635.20, 1,145,452.80 and 408,466.40 is: 612,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,635.20 : 1,145,452.80 = 408,466.40 : x
  2. Step 2: Convert to fraction form
    763,635.20/1,145,452.80 = 408,466.40/x
  3. Step 3: Cross multiply
    763,635.20x = 1,145,452.80 × 408,466.40
  4. Step 4: Simplify right side
    763,635.20x = 467,878,981,585.92
  5. Step 5: Solve for x
    x = 467,878,981,585.92/763,635.20
  6. Step 6: Final answer
    x = 612,699.60

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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.