Home / 1,515,915.60-2,091,837.82-862,367.70

Finding the Fourth Proportional to 1,515,915.60, 2,091,837.82 and 862,367.70

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Solution

The fourth proportional to 1,515,915.60, 2,091,837.82 and 862,367.70 is: 1,189,995.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,915.60 : 2,091,837.82 = 862,367.70 : x
  2. Step 2: Convert to fraction form
    1,515,915.60/2,091,837.82 = 862,367.70/x
  3. Step 3: Cross multiply
    1,515,915.60x = 2,091,837.82 × 862,367.70
  4. Step 4: Simplify right side
    1,515,915.60x = 1,803,933,369,606.41
  5. Step 5: Solve for x
    x = 1,803,933,369,606.41/1,515,915.60
  6. Step 6: Final answer
    x = 1,189,995.91

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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.