Home / 1,261,696.80-1,887,937.20-929,920.80

Finding the Fourth Proportional to 1,261,696.80, 1,887,937.20 and 929,920.80

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Solution

The fourth proportional to 1,261,696.80, 1,887,937.20 and 929,920.80 is: 1,391,484.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,696.80 : 1,887,937.20 = 929,920.80 : x
  2. Step 2: Convert to fraction form
    1,261,696.80/1,887,937.20 = 929,920.80/x
  3. Step 3: Cross multiply
    1,261,696.80x = 1,887,937.20 × 929,920.80
  4. Step 4: Simplify right side
    1,261,696.80x = 1,755,632,071,373.76
  5. Step 5: Solve for x
    x = 1,755,632,071,373.76/1,261,696.80
  6. Step 6: Final answer
    x = 1,391,484.92

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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.