Home / 991,889.12-1,486,992.90-393,273.20

Finding the Fourth Proportional to 991,889.12, 1,486,992.90 and 393,273.20

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Solution

The fourth proportional to 991,889.12, 1,486,992.90 and 393,273.20 is: 589,576.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,889.12 : 1,486,992.90 = 393,273.20 : x
  2. Step 2: Convert to fraction form
    991,889.12/1,486,992.90 = 393,273.20/x
  3. Step 3: Cross multiply
    991,889.12x = 1,486,992.90 × 393,273.20
  4. Step 4: Simplify right side
    991,889.12x = 584,794,456,160.28
  5. Step 5: Solve for x
    x = 584,794,456,160.28/991,889.12
  6. Step 6: Final answer
    x = 589,576.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.