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Finding the Fourth Proportional to 660,601.20, 911,641.60 and 374,180.56

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Solution

The fourth proportional to 660,601.20, 911,641.60 and 374,180.56 is: 516,375.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,601.20 : 911,641.60 = 374,180.56 : x
  2. Step 2: Convert to fraction form
    660,601.20/911,641.60 = 374,180.56/x
  3. Step 3: Cross multiply
    660,601.20x = 911,641.60 × 374,180.56
  4. Step 4: Simplify right side
    660,601.20x = 341,118,564,407.30
  5. Step 5: Solve for x
    x = 341,118,564,407.30/660,601.20
  6. Step 6: Final answer
    x = 516,375.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.