Home / 990,808.96-1,367,324.40-538,103.20

Finding the Fourth Proportional to 990,808.96, 1,367,324.40 and 538,103.20

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Solution

The fourth proportional to 990,808.96, 1,367,324.40 and 538,103.20 is: 742,586.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,808.96 : 1,367,324.40 = 538,103.20 : x
  2. Step 2: Convert to fraction form
    990,808.96/1,367,324.40 = 538,103.20/x
  3. Step 3: Cross multiply
    990,808.96x = 1,367,324.40 × 538,103.20
  4. Step 4: Simplify right side
    990,808.96x = 735,761,635,078.08
  5. Step 5: Solve for x
    x = 735,761,635,078.08/990,808.96
  6. Step 6: Final answer
    x = 742,586.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.