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Finding the Fourth Proportional to 660,674.56, 911,747.76 and 374,190.40

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Solution

The fourth proportional to 660,674.56, 911,747.76 and 374,190.40 is: 516,392.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,674.56 : 911,747.76 = 374,190.40 : x
  2. Step 2: Convert to fraction form
    660,674.56/911,747.76 = 374,190.40/x
  3. Step 3: Cross multiply
    660,674.56x = 911,747.76 × 374,190.40
  4. Step 4: Simplify right side
    660,674.56x = 341,167,259,013.50
  5. Step 5: Solve for x
    x = 341,167,259,013.50/660,674.56
  6. Step 6: Final answer
    x = 516,392.31

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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.