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Finding the Fourth Proportional to 660,508.79, 911,502.11 and 374,084.23

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Solution

The fourth proportional to 660,508.79, 911,502.11 and 374,084.23 is: 516,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,508.79 : 911,502.11 = 374,084.23 : x
  2. Step 2: Convert to fraction form
    660,508.79/911,502.11 = 374,084.23/x
  3. Step 3: Cross multiply
    660,508.79x = 911,502.11 × 374,084.23
  4. Step 4: Simplify right side
    660,508.79x = 340,978,560,813.55
  5. Step 5: Solve for x
    x = 340,978,560,813.55/660,508.79
  6. Step 6: Final answer
    x = 516,236.22

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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.