Home / 831,876.20-1,248,246.30-388,644.20

Finding the Fourth Proportional to 831,876.20, 1,248,246.30 and 388,644.20

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Solution

The fourth proportional to 831,876.20, 1,248,246.30 and 388,644.20 is: 583,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,876.20 : 1,248,246.30 = 388,644.20 : x
  2. Step 2: Convert to fraction form
    831,876.20/1,248,246.30 = 388,644.20/x
  3. Step 3: Cross multiply
    831,876.20x = 1,248,246.30 × 388,644.20
  4. Step 4: Simplify right side
    831,876.20x = 485,123,684,666.46
  5. Step 5: Solve for x
    x = 485,123,684,666.46/831,876.20
  6. Step 6: Final answer
    x = 583,168.13

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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.