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Finding the Fourth Proportional to 492,768.20, 739,152.30 and 431,750.90

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Solution

The fourth proportional to 492,768.20, 739,152.30 and 431,750.90 is: 647,626.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,768.20 : 739,152.30 = 431,750.90 : x
  2. Step 2: Convert to fraction form
    492,768.20/739,152.30 = 431,750.90/x
  3. Step 3: Cross multiply
    492,768.20x = 739,152.30 × 431,750.90
  4. Step 4: Simplify right side
    492,768.20x = 319,129,670,762.07
  5. Step 5: Solve for x
    x = 319,129,670,762.07/492,768.20
  6. Step 6: Final answer
    x = 647,626.35

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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.