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Finding the Fourth Proportional to 827,603.40, 1,241,405.10 and 491,680.20

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Solution

The fourth proportional to 827,603.40, 1,241,405.10 and 491,680.20 is: 737,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,603.40 : 1,241,405.10 = 491,680.20 : x
  2. Step 2: Convert to fraction form
    827,603.40/1,241,405.10 = 491,680.20/x
  3. Step 3: Cross multiply
    827,603.40x = 1,241,405.10 × 491,680.20
  4. Step 4: Simplify right side
    827,603.40x = 610,374,307,849.02
  5. Step 5: Solve for x
    x = 610,374,307,849.02/827,603.40
  6. Step 6: Final answer
    x = 737,520.30

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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.