Home / 858,800.20-1,288,200.30-740,702.20

Finding the Fourth Proportional to 858,800.20, 1,288,200.30 and 740,702.20

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Solution

The fourth proportional to 858,800.20, 1,288,200.30 and 740,702.20 is: 1,111,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,800.20 : 1,288,200.30 = 740,702.20 : x
  2. Step 2: Convert to fraction form
    858,800.20/1,288,200.30 = 740,702.20/x
  3. Step 3: Cross multiply
    858,800.20x = 1,288,200.30 × 740,702.20
  4. Step 4: Simplify right side
    858,800.20x = 954,172,796,250.66
  5. Step 5: Solve for x
    x = 954,172,796,250.66/858,800.20
  6. Step 6: Final answer
    x = 1,111,053.30

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Double scale
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Similar ratio
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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.