Home / 1,557,989.67-2,150,019.95-869,655.52

Finding the Fourth Proportional to 1,557,989.67, 2,150,019.95 and 869,655.52

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Solution

The fourth proportional to 1,557,989.67, 2,150,019.95 and 869,655.52 is: 1,200,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,989.67 : 2,150,019.95 = 869,655.52 : x
  2. Step 2: Convert to fraction form
    1,557,989.67/2,150,019.95 = 869,655.52/x
  3. Step 3: Cross multiply
    1,557,989.67x = 2,150,019.95 × 869,655.52
  4. Step 4: Simplify right side
    1,557,989.67x = 1,869,776,707,904.30
  5. Step 5: Solve for x
    x = 1,869,776,707,904.30/1,557,989.67
  6. Step 6: Final answer
    x = 1,200,121.38

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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.