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Finding the Fourth Proportional to 648,049.80, 972,074.70 and 410,687.40

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Solution

The fourth proportional to 648,049.80, 972,074.70 and 410,687.40 is: 616,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,049.80 : 972,074.70 = 410,687.40 : x
  2. Step 2: Convert to fraction form
    648,049.80/972,074.70 = 410,687.40/x
  3. Step 3: Cross multiply
    648,049.80x = 972,074.70 × 410,687.40
  4. Step 4: Simplify right side
    648,049.80x = 399,218,831,148.78
  5. Step 5: Solve for x
    x = 399,218,831,148.78/648,049.80
  6. Step 6: Final answer
    x = 616,031.10

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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.