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Finding the Fourth Proportional to 524,233.40, 786,350.10 and 485,742.20

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Solution

The fourth proportional to 524,233.40, 786,350.10 and 485,742.20 is: 728,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,233.40 : 786,350.10 = 485,742.20 : x
  2. Step 2: Convert to fraction form
    524,233.40/786,350.10 = 485,742.20/x
  3. Step 3: Cross multiply
    524,233.40x = 786,350.10 × 485,742.20
  4. Step 4: Simplify right side
    524,233.40x = 381,963,427,544.22
  5. Step 5: Solve for x
    x = 381,963,427,544.22/524,233.40
  6. Step 6: Final answer
    x = 728,613.30

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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.