Home / 718,761.92-1,078,142.88-403,440.32

Finding the Fourth Proportional to 718,761.92, 1,078,142.88 and 403,440.32

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Solution

The fourth proportional to 718,761.92, 1,078,142.88 and 403,440.32 is: 605,160.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,761.92 : 1,078,142.88 = 403,440.32 : x
  2. Step 2: Convert to fraction form
    718,761.92/1,078,142.88 = 403,440.32/x
  3. Step 3: Cross multiply
    718,761.92x = 1,078,142.88 × 403,440.32
  4. Step 4: Simplify right side
    718,761.92x = 434,966,308,512.92
  5. Step 5: Solve for x
    x = 434,966,308,512.92/718,761.92
  6. Step 6: Final answer
    x = 605,160.48

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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.