Home / 1,587,078.30-2,379,658.14-639,342.12

Finding the Fourth Proportional to 1,587,078.30, 2,379,658.14 and 639,342.12

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Solution

The fourth proportional to 1,587,078.30, 2,379,658.14 and 639,342.12 is: 958,626.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587,078.30 : 2,379,658.14 = 639,342.12 : x
  2. Step 2: Convert to fraction form
    1,587,078.30/2,379,658.14 = 639,342.12/x
  3. Step 3: Cross multiply
    1,587,078.30x = 2,379,658.14 × 639,342.12
  4. Step 4: Simplify right side
    1,587,078.30x = 1,521,415,680,102.86
  5. Step 5: Solve for x
    x = 1,521,415,680,102.86/1,587,078.30
  6. Step 6: Final answer
    x = 958,626.73

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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.