Home / 687,105.60-1,030,658.40-188,468.80

Finding the Fourth Proportional to 687,105.60, 1,030,658.40 and 188,468.80

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Solution

The fourth proportional to 687,105.60, 1,030,658.40 and 188,468.80 is: 282,703.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,105.60 : 1,030,658.40 = 188,468.80 : x
  2. Step 2: Convert to fraction form
    687,105.60/1,030,658.40 = 188,468.80/x
  3. Step 3: Cross multiply
    687,105.60x = 1,030,658.40 × 188,468.80
  4. Step 4: Simplify right side
    687,105.60x = 194,246,951,857.92
  5. Step 5: Solve for x
    x = 194,246,951,857.92/687,105.60
  6. Step 6: Final answer
    x = 282,703.20

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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.