Home / 831,817.28-1,148,218.32-647,691.36

Finding the Fourth Proportional to 831,817.28, 1,148,218.32 and 647,691.36

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Solution

The fourth proportional to 831,817.28, 1,148,218.32 and 647,691.36 is: 894,055.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,817.28 : 1,148,218.32 = 647,691.36 : x
  2. Step 2: Convert to fraction form
    831,817.28/1,148,218.32 = 647,691.36/x
  3. Step 3: Cross multiply
    831,817.28x = 1,148,218.32 × 647,691.36
  4. Step 4: Simplify right side
    831,817.28x = 743,691,085,257.72
  5. Step 5: Solve for x
    x = 743,691,085,257.72/831,817.28
  6. Step 6: Final answer
    x = 894,055.83

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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.