Home / 831,721.68-1,147,750.08-469,140.24

Finding the Fourth Proportional to 831,721.68, 1,147,750.08 and 469,140.24

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Solution

The fourth proportional to 831,721.68, 1,147,750.08 and 469,140.24 is: 647,398.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,721.68 : 1,147,750.08 = 469,140.24 : x
  2. Step 2: Convert to fraction form
    831,721.68/1,147,750.08 = 469,140.24/x
  3. Step 3: Cross multiply
    831,721.68x = 1,147,750.08 × 469,140.24
  4. Step 4: Simplify right side
    831,721.68x = 538,455,747,991.22
  5. Step 5: Solve for x
    x = 538,455,747,991.22/831,721.68
  6. Step 6: Final answer
    x = 647,398.96

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.