Home / 791,999.80-1,187,999.70-392,702.20

Finding the Fourth Proportional to 791,999.80, 1,187,999.70 and 392,702.20

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Solution

The fourth proportional to 791,999.80, 1,187,999.70 and 392,702.20 is: 589,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,999.80 : 1,187,999.70 = 392,702.20 : x
  2. Step 2: Convert to fraction form
    791,999.80/1,187,999.70 = 392,702.20/x
  3. Step 3: Cross multiply
    791,999.80x = 1,187,999.70 × 392,702.20
  4. Step 4: Simplify right side
    791,999.80x = 466,530,095,789.34
  5. Step 5: Solve for x
    x = 466,530,095,789.34/791,999.80
  6. Step 6: Final answer
    x = 589,053.30

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1.5x scale

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.