Home / 1,189,915.60-1,642,073.92-646,040.60

Finding the Fourth Proportional to 1,189,915.60, 1,642,073.92 and 646,040.60

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Solution

The fourth proportional to 1,189,915.60, 1,642,073.92 and 646,040.60 is: 891,530.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,915.60 : 1,642,073.92 = 646,040.60 : x
  2. Step 2: Convert to fraction form
    1,189,915.60/1,642,073.92 = 646,040.60/x
  3. Step 3: Cross multiply
    1,189,915.60x = 1,642,073.92 × 646,040.60
  4. Step 4: Simplify right side
    1,189,915.60x = 1,060,846,420,521.15
  5. Step 5: Solve for x
    x = 1,060,846,420,521.15/1,189,915.60
  6. Step 6: Final answer
    x = 891,530.81

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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.