Home / 1,557,402.39-2,149,215.12-878,338.89

Finding the Fourth Proportional to 1,557,402.39, 2,149,215.12 and 878,338.89

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Solution

The fourth proportional to 1,557,402.39, 2,149,215.12 and 878,338.89 is: 1,212,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,402.39 : 2,149,215.12 = 878,338.89 : x
  2. Step 2: Convert to fraction form
    1,557,402.39/2,149,215.12 = 878,338.89/x
  3. Step 3: Cross multiply
    1,557,402.39x = 2,149,215.12 × 878,338.89
  4. Step 4: Simplify right side
    1,557,402.39x = 1,887,739,222,872.02
  5. Step 5: Solve for x
    x = 1,887,739,222,872.02/1,557,402.39
  6. Step 6: Final answer
    x = 1,212,107.57

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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.