Home / 786,912.90-1,181,244.15-487,731.30

Finding the Fourth Proportional to 786,912.90, 1,181,244.15 and 487,731.30

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Solution

The fourth proportional to 786,912.90, 1,181,244.15 and 487,731.30 is: 732,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,912.90 : 1,181,244.15 = 487,731.30 : x
  2. Step 2: Convert to fraction form
    786,912.90/1,181,244.15 = 487,731.30/x
  3. Step 3: Cross multiply
    786,912.90x = 1,181,244.15 × 487,731.30
  4. Step 4: Simplify right side
    786,912.90x = 576,129,744,896.90
  5. Step 5: Solve for x
    x = 576,129,744,896.90/786,912.90
  6. Step 6: Final answer
    x = 732,139.15

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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.