Home / 687,780.23-948,477.13-442,514.68

Finding the Fourth Proportional to 687,780.23, 948,477.13 and 442,514.68

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Solution

The fourth proportional to 687,780.23, 948,477.13 and 442,514.68 is: 610,245.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,780.23 : 948,477.13 = 442,514.68 : x
  2. Step 2: Convert to fraction form
    687,780.23/948,477.13 = 442,514.68/x
  3. Step 3: Cross multiply
    687,780.23x = 948,477.13 × 442,514.68
  4. Step 4: Simplify right side
    687,780.23x = 419,715,047,257.66
  5. Step 5: Solve for x
    x = 419,715,047,257.66/687,780.23
  6. Step 6: Final answer
    x = 610,245.87

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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.