Home / 783,010.82-1,080,630.77-438,905.20

Finding the Fourth Proportional to 783,010.82, 1,080,630.77 and 438,905.20

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Solution

The fourth proportional to 783,010.82, 1,080,630.77 and 438,905.20 is: 605,731.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,010.82 : 1,080,630.77 = 438,905.20 : x
  2. Step 2: Convert to fraction form
    783,010.82/1,080,630.77 = 438,905.20/x
  3. Step 3: Cross multiply
    783,010.82x = 1,080,630.77 × 438,905.20
  4. Step 4: Simplify right side
    783,010.82x = 474,294,459,336.90
  5. Step 5: Solve for x
    x = 474,294,459,336.90/783,010.82
  6. Step 6: Final answer
    x = 605,731.68

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.