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Finding the Fourth Proportional to 660,267.47, 990,401.27 and 344,650.56

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Solution

The fourth proportional to 660,267.47, 990,401.27 and 344,650.56 is: 516,975.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,267.47 : 990,401.27 = 344,650.56 : x
  2. Step 2: Convert to fraction form
    660,267.47/990,401.27 = 344,650.56/x
  3. Step 3: Cross multiply
    660,267.47x = 990,401.27 × 344,650.56
  4. Step 4: Simplify right side
    660,267.47x = 341,342,350,606.96
  5. Step 5: Solve for x
    x = 341,342,350,606.96/660,267.47
  6. Step 6: Final answer
    x = 516,975.88

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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.