Home / 1,557,989.30-2,150,019.43-869,655.15

Finding the Fourth Proportional to 1,557,989.30, 2,150,019.43 and 869,655.15

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Solution

The fourth proportional to 1,557,989.30, 2,150,019.43 and 869,655.15 is: 1,200,120.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,989.30 : 2,150,019.43 = 869,655.15 : x
  2. Step 2: Convert to fraction form
    1,557,989.30/2,150,019.43 = 869,655.15/x
  3. Step 3: Cross multiply
    1,557,989.30x = 2,150,019.43 × 869,655.15
  4. Step 4: Simplify right side
    1,557,989.30x = 1,869,775,454,801.19
  5. Step 5: Solve for x
    x = 1,869,775,454,801.19/1,557,989.30
  6. Step 6: Final answer
    x = 1,200,120.86

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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.