Home / 1,557,434.70-2,149,255.86-869,099.28

Finding the Fourth Proportional to 1,557,434.70, 2,149,255.86 and 869,099.28

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Solution

The fourth proportional to 1,557,434.70, 2,149,255.86 and 869,099.28 is: 1,199,354.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,434.70 : 2,149,255.86 = 869,099.28 : x
  2. Step 2: Convert to fraction form
    1,557,434.70/2,149,255.86 = 869,099.28/x
  3. Step 3: Cross multiply
    1,557,434.70x = 2,149,255.86 × 869,099.28
  4. Step 4: Simplify right side
    1,557,434.70x = 1,867,916,720,461.78
  5. Step 5: Solve for x
    x = 1,867,916,720,461.78/1,557,434.70
  6. Step 6: Final answer
    x = 1,199,354.76

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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.