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Finding the Fourth Proportional to 518,096.70, 777,145.05 and 307,626.30

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Solution

The fourth proportional to 518,096.70, 777,145.05 and 307,626.30 is: 461,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,096.70 : 777,145.05 = 307,626.30 : x
  2. Step 2: Convert to fraction form
    518,096.70/777,145.05 = 307,626.30/x
  3. Step 3: Cross multiply
    518,096.70x = 777,145.05 × 307,626.30
  4. Step 4: Simplify right side
    518,096.70x = 239,070,256,294.82
  5. Step 5: Solve for x
    x = 239,070,256,294.82/518,096.70
  6. Step 6: Final answer
    x = 461,439.45

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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.