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Finding the Fourth Proportional to 491,702.20, 737,034.90 and 280,886.20

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Solution

The fourth proportional to 491,702.20, 737,034.90 and 280,886.20 is: 421,033.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,702.20 : 737,034.90 = 280,886.20 : x
  2. Step 2: Convert to fraction form
    491,702.20/737,034.90 = 280,886.20/x
  3. Step 3: Cross multiply
    491,702.20x = 737,034.90 × 280,886.20
  4. Step 4: Simplify right side
    491,702.20x = 207,022,932,328.38
  5. Step 5: Solve for x
    x = 207,022,932,328.38/491,702.20
  6. Step 6: Final answer
    x = 421,033.16

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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.