Home / 991,487.28-1,368,272.70-538,807.44

Finding the Fourth Proportional to 991,487.28, 1,368,272.70 and 538,807.44

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Solution

The fourth proportional to 991,487.28, 1,368,272.70 and 538,807.44 is: 743,565.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,487.28 : 1,368,272.70 = 538,807.44 : x
  2. Step 2: Convert to fraction form
    991,487.28/1,368,272.70 = 538,807.44/x
  3. Step 3: Cross multiply
    991,487.28x = 1,368,272.70 × 538,807.44
  4. Step 4: Simplify right side
    991,487.28x = 737,235,510,708.89
  5. Step 5: Solve for x
    x = 737,235,510,708.89/991,487.28
  6. Step 6: Final answer
    x = 743,565.27

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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.