Home / 687,739.10-1,031,608.65-189,103.10

Finding the Fourth Proportional to 687,739.10, 1,031,608.65 and 189,103.10

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Solution

The fourth proportional to 687,739.10, 1,031,608.65 and 189,103.10 is: 283,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,739.10 : 1,031,608.65 = 189,103.10 : x
  2. Step 2: Convert to fraction form
    687,739.10/1,031,608.65 = 189,103.10/x
  3. Step 3: Cross multiply
    687,739.10x = 1,031,608.65 × 189,103.10
  4. Step 4: Simplify right side
    687,739.10x = 195,080,393,701.82
  5. Step 5: Solve for x
    x = 195,080,393,701.82/687,739.10
  6. Step 6: Final answer
    x = 283,654.65

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Similar ratio
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1.5x scale

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.