Home / 938,987.40-1,408,481.10-274,139.40

Finding the Fourth Proportional to 938,987.40, 1,408,481.10 and 274,139.40

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Solution

The fourth proportional to 938,987.40, 1,408,481.10 and 274,139.40 is: 411,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,987.40 : 1,408,481.10 = 274,139.40 : x
  2. Step 2: Convert to fraction form
    938,987.40/1,408,481.10 = 274,139.40/x
  3. Step 3: Cross multiply
    938,987.40x = 1,408,481.10 × 274,139.40
  4. Step 4: Simplify right side
    938,987.40x = 386,120,163,665.34
  5. Step 5: Solve for x
    x = 386,120,163,665.34/938,987.40
  6. Step 6: Final answer
    x = 411,209.10

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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.