Home / 1,427,121.72-1,970,461.17-918,709.74

Finding the Fourth Proportional to 1,427,121.72, 1,970,461.17 and 918,709.74

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Solution

The fourth proportional to 1,427,121.72, 1,970,461.17 and 918,709.74 is: 1,268,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,121.72 : 1,970,461.17 = 918,709.74 : x
  2. Step 2: Convert to fraction form
    1,427,121.72/1,970,461.17 = 918,709.74/x
  3. Step 3: Cross multiply
    1,427,121.72x = 1,970,461.17 × 918,709.74
  4. Step 4: Simplify right side
    1,427,121.72x = 1,810,281,869,170.80
  5. Step 5: Solve for x
    x = 1,810,281,869,170.80/1,427,121.72
  6. Step 6: Final answer
    x = 1,268,484.56

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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.