Home / 988,557.40-1,483,079.10-278,576.20

Finding the Fourth Proportional to 988,557.40, 1,483,079.10 and 278,576.20

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Solution

The fourth proportional to 988,557.40, 1,483,079.10 and 278,576.20 is: 417,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,557.40 : 1,483,079.10 = 278,576.20 : x
  2. Step 2: Convert to fraction form
    988,557.40/1,483,079.10 = 278,576.20/x
  3. Step 3: Cross multiply
    988,557.40x = 1,483,079.10 × 278,576.20
  4. Step 4: Simplify right side
    988,557.40x = 413,150,539,977.42
  5. Step 5: Solve for x
    x = 413,150,539,977.42/988,557.40
  6. Step 6: Final answer
    x = 417,932.78

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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.