Home / 865,720.90-1,298,384.52-416,161.18

Finding the Fourth Proportional to 865,720.90, 1,298,384.52 and 416,161.18

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Solution

The fourth proportional to 865,720.90, 1,298,384.52 and 416,161.18 is: 624,147.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,720.90 : 1,298,384.52 = 416,161.18 : x
  2. Step 2: Convert to fraction form
    865,720.90/1,298,384.52 = 416,161.18/x
  3. Step 3: Cross multiply
    865,720.90x = 1,298,384.52 × 416,161.18
  4. Step 4: Simplify right side
    865,720.90x = 540,337,233,936.93
  5. Step 5: Solve for x
    x = 540,337,233,936.93/865,720.90
  6. Step 6: Final answer
    x = 624,147.15

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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.