Home / 865,645.85-1,298,060.11-505,919.90

Finding the Fourth Proportional to 865,645.85, 1,298,060.11 and 505,919.90

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Solution

The fourth proportional to 865,645.85, 1,298,060.11 and 505,919.90 is: 758,641.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,645.85 : 1,298,060.11 = 505,919.90 : x
  2. Step 2: Convert to fraction form
    865,645.85/1,298,060.11 = 505,919.90/x
  3. Step 3: Cross multiply
    865,645.85x = 1,298,060.11 × 505,919.90
  4. Step 4: Simplify right side
    865,645.85x = 656,714,444,922.74
  5. Step 5: Solve for x
    x = 656,714,444,922.74/865,645.85
  6. Step 6: Final answer
    x = 758,641.01

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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.