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Finding the Fourth Proportional to 518,331.20, 777,496.80 and 488,806.70

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Solution

The fourth proportional to 518,331.20, 777,496.80 and 488,806.70 is: 733,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,331.20 : 777,496.80 = 488,806.70 : x
  2. Step 2: Convert to fraction form
    518,331.20/777,496.80 = 488,806.70/x
  3. Step 3: Cross multiply
    518,331.20x = 777,496.80 × 488,806.70
  4. Step 4: Simplify right side
    518,331.20x = 380,045,645,068.56
  5. Step 5: Solve for x
    x = 380,045,645,068.56/518,331.20
  6. Step 6: Final answer
    x = 733,210.05

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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.