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Finding the Fourth Proportional to 518,478.30, 777,717.45 and 163,601.10

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Solution

The fourth proportional to 518,478.30, 777,717.45 and 163,601.10 is: 245,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,478.30 : 777,717.45 = 163,601.10 : x
  2. Step 2: Convert to fraction form
    518,478.30/777,717.45 = 163,601.10/x
  3. Step 3: Cross multiply
    518,478.30x = 777,717.45 × 163,601.10
  4. Step 4: Simplify right side
    518,478.30x = 127,235,430,309.20
  5. Step 5: Solve for x
    x = 127,235,430,309.20/518,478.30
  6. Step 6: Final answer
    x = 245,401.65

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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.