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Finding the Fourth Proportional to 660,772.10, 911,834.66 and 374,294.23

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Solution

The fourth proportional to 660,772.10, 911,834.66 and 374,294.23 is: 516,508.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,772.10 : 911,834.66 = 374,294.23 : x
  2. Step 2: Convert to fraction form
    660,772.10/911,834.66 = 374,294.23/x
  3. Step 3: Cross multiply
    660,772.10x = 911,834.66 × 374,294.23
  4. Step 4: Simplify right side
    660,772.10x = 341,294,451,952.01
  5. Step 5: Solve for x
    x = 341,294,451,952.01/660,772.10
  6. Step 6: Final answer
    x = 516,508.57

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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.