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Finding the Fourth Proportional to 519,632.10, 779,448.15 and 490,601.70

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Solution

The fourth proportional to 519,632.10, 779,448.15 and 490,601.70 is: 735,902.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,632.10 : 779,448.15 = 490,601.70 : x
  2. Step 2: Convert to fraction form
    519,632.10/779,448.15 = 490,601.70/x
  3. Step 3: Cross multiply
    519,632.10x = 779,448.15 × 490,601.70
  4. Step 4: Simplify right side
    519,632.10x = 382,398,587,451.86
  5. Step 5: Solve for x
    x = 382,398,587,451.86/519,632.10
  6. Step 6: Final answer
    x = 735,902.55

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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.