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Finding the Fourth Proportional to 660,759.14, 911,818.40 and 374,273.48

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Solution

The fourth proportional to 660,759.14, 911,818.40 and 374,273.48 is: 516,480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,759.14 : 911,818.40 = 374,273.48 : x
  2. Step 2: Convert to fraction form
    660,759.14/911,818.40 = 374,273.48/x
  3. Step 3: Cross multiply
    660,759.14x = 911,818.40 × 374,273.48
  4. Step 4: Simplify right side
    660,759.14x = 341,269,445,696.03
  5. Step 5: Solve for x
    x = 341,269,445,696.03/660,759.14
  6. Step 6: Final answer
    x = 516,480.86

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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.