Home / 778,920.40-1,168,380.60-442,997.20

Finding the Fourth Proportional to 778,920.40, 1,168,380.60 and 442,997.20

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Solution

The fourth proportional to 778,920.40, 1,168,380.60 and 442,997.20 is: 664,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,920.40 : 1,168,380.60 = 442,997.20 : x
  2. Step 2: Convert to fraction form
    778,920.40/1,168,380.60 = 442,997.20/x
  3. Step 3: Cross multiply
    778,920.40x = 1,168,380.60 × 442,997.20
  4. Step 4: Simplify right side
    778,920.40x = 517,589,334,334.32
  5. Step 5: Solve for x
    x = 517,589,334,334.32/778,920.40
  6. Step 6: Final answer
    x = 664,495.80

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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.