Home / 831,462.07-1,246,805.39-431,995.45

Finding the Fourth Proportional to 831,462.07, 1,246,805.39 and 431,995.45

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Solution

The fourth proportional to 831,462.07, 1,246,805.39 and 431,995.45 is: 647,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,462.07 : 1,246,805.39 = 431,995.45 : x
  2. Step 2: Convert to fraction form
    831,462.07/1,246,805.39 = 431,995.45/x
  3. Step 3: Cross multiply
    831,462.07x = 1,246,805.39 × 431,995.45
  4. Step 4: Simplify right side
    831,462.07x = 538,614,253,355.50
  5. Step 5: Solve for x
    x = 538,614,253,355.50/831,462.07
  6. Step 6: Final answer
    x = 647,791.73

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Half scale
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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.