Home / 778,974.30-1,168,461.45-280,158.30

Finding the Fourth Proportional to 778,974.30, 1,168,461.45 and 280,158.30

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Solution

The fourth proportional to 778,974.30, 1,168,461.45 and 280,158.30 is: 420,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,974.30 : 1,168,461.45 = 280,158.30 : x
  2. Step 2: Convert to fraction form
    778,974.30/1,168,461.45 = 280,158.30/x
  3. Step 3: Cross multiply
    778,974.30x = 1,168,461.45 × 280,158.30
  4. Step 4: Simplify right side
    778,974.30x = 327,354,173,447.54
  5. Step 5: Solve for x
    x = 327,354,173,447.54/778,974.30
  6. Step 6: Final answer
    x = 420,237.45

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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.