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Finding the Fourth Proportional to 518,097.20, 777,145.80 and 307,626.80

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Solution

The fourth proportional to 518,097.20, 777,145.80 and 307,626.80 is: 461,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,097.20 : 777,145.80 = 307,626.80 : x
  2. Step 2: Convert to fraction form
    518,097.20/777,145.80 = 307,626.80/x
  3. Step 3: Cross multiply
    518,097.20x = 777,145.80 × 307,626.80
  4. Step 4: Simplify right side
    518,097.20x = 239,070,875,587.44
  5. Step 5: Solve for x
    x = 239,070,875,587.44/518,097.20
  6. Step 6: Final answer
    x = 461,440.20

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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.