Home / 3,128,616.80-4,692,925.20-998,916.20

Finding the Fourth Proportional to 3,128,616.80, 4,692,925.20 and 998,916.20

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Solution

The fourth proportional to 3,128,616.80, 4,692,925.20 and 998,916.20 is: 1,498,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,616.80 : 4,692,925.20 = 998,916.20 : x
  2. Step 2: Convert to fraction form
    3,128,616.80/4,692,925.20 = 998,916.20/x
  3. Step 3: Cross multiply
    3,128,616.80x = 4,692,925.20 × 998,916.20
  4. Step 4: Simplify right side
    3,128,616.80x = 4,687,839,007,668.24
  5. Step 5: Solve for x
    x = 4,687,839,007,668.24/3,128,616.80
  6. Step 6: Final answer
    x = 1,498,374.30

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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.