Home / 1,386,218.80-2,079,328.20-487,799.20

Finding the Fourth Proportional to 1,386,218.80, 2,079,328.20 and 487,799.20

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Solution

The fourth proportional to 1,386,218.80, 2,079,328.20 and 487,799.20 is: 731,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,218.80 : 2,079,328.20 = 487,799.20 : x
  2. Step 2: Convert to fraction form
    1,386,218.80/2,079,328.20 = 487,799.20/x
  3. Step 3: Cross multiply
    1,386,218.80x = 2,079,328.20 × 487,799.20
  4. Step 4: Simplify right side
    1,386,218.80x = 1,014,294,632,497.44
  5. Step 5: Solve for x
    x = 1,014,294,632,497.44/1,386,218.80
  6. Step 6: Final answer
    x = 731,698.80

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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.