Home / 860,513.20-1,290,850.74-253,301.91

Finding the Fourth Proportional to 860,513.20, 1,290,850.74 and 253,301.91

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Solution

The fourth proportional to 860,513.20, 1,290,850.74 and 253,301.91 is: 379,976.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,513.20 : 1,290,850.74 = 253,301.91 : x
  2. Step 2: Convert to fraction form
    860,513.20/1,290,850.74 = 253,301.91/x
  3. Step 3: Cross multiply
    860,513.20x = 1,290,850.74 × 253,301.91
  4. Step 4: Simplify right side
    860,513.20x = 326,974,957,966.91
  5. Step 5: Solve for x
    x = 326,974,957,966.91/860,513.20
  6. Step 6: Final answer
    x = 379,976.69

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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.