Home / 1,289,431.53-1,779,380.28-716,456.97

Finding the Fourth Proportional to 1,289,431.53, 1,779,380.28 and 716,456.97

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Solution

The fourth proportional to 1,289,431.53, 1,779,380.28 and 716,456.97 is: 988,691.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,431.53 : 1,779,380.28 = 716,456.97 : x
  2. Step 2: Convert to fraction form
    1,289,431.53/1,779,380.28 = 716,456.97/x
  3. Step 3: Cross multiply
    1,289,431.53x = 1,779,380.28 × 716,456.97
  4. Step 4: Simplify right side
    1,289,431.53x = 1,274,849,403,886.55
  5. Step 5: Solve for x
    x = 1,274,849,403,886.55/1,289,431.53
  6. Step 6: Final answer
    x = 988,691.04

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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.