Home / 1,221,200.56-1,831,684.20-747,642.16

Finding the Fourth Proportional to 1,221,200.56, 1,831,684.20 and 747,642.16

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Solution

The fourth proportional to 1,221,200.56, 1,831,684.20 and 747,642.16 is: 1,121,391.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,200.56 : 1,831,684.20 = 747,642.16 : x
  2. Step 2: Convert to fraction form
    1,221,200.56/1,831,684.20 = 747,642.16/x
  3. Step 3: Cross multiply
    1,221,200.56x = 1,831,684.20 × 747,642.16
  4. Step 4: Simplify right side
    1,221,200.56x = 1,369,444,331,725.87
  5. Step 5: Solve for x
    x = 1,369,444,331,725.87/1,221,200.56
  6. Step 6: Final answer
    x = 1,121,391.83

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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.