Home / 687,740.60-1,031,610.90-189,104.60

Finding the Fourth Proportional to 687,740.60, 1,031,610.90 and 189,104.60

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Solution

The fourth proportional to 687,740.60, 1,031,610.90 and 189,104.60 is: 283,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,740.60 : 1,031,610.90 = 189,104.60 : x
  2. Step 2: Convert to fraction form
    687,740.60/1,031,610.90 = 189,104.60/x
  3. Step 3: Cross multiply
    687,740.60x = 1,031,610.90 × 189,104.60
  4. Step 4: Simplify right side
    687,740.60x = 195,082,366,600.14
  5. Step 5: Solve for x
    x = 195,082,366,600.14/687,740.60
  6. Step 6: Final answer
    x = 283,656.90

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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.