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Finding the Fourth Proportional to 605,730.80, 908,596.20 and 487,632.80

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Solution

The fourth proportional to 605,730.80, 908,596.20 and 487,632.80 is: 731,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,730.80 : 908,596.20 = 487,632.80 : x
  2. Step 2: Convert to fraction form
    605,730.80/908,596.20 = 487,632.80/x
  3. Step 3: Cross multiply
    605,730.80x = 908,596.20 × 487,632.80
  4. Step 4: Simplify right side
    605,730.80x = 443,061,309,075.36
  5. Step 5: Solve for x
    x = 443,061,309,075.36/605,730.80
  6. Step 6: Final answer
    x = 731,449.20

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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.