Home / 661,531.22-912,922.18-495,665.50

Finding the Fourth Proportional to 661,531.22, 912,922.18 and 495,665.50

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Solution

The fourth proportional to 661,531.22, 912,922.18 and 495,665.50 is: 684,025.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,531.22 : 912,922.18 = 495,665.50 : x
  2. Step 2: Convert to fraction form
    661,531.22/912,922.18 = 495,665.50/x
  3. Step 3: Cross multiply
    661,531.22x = 912,922.18 × 495,665.50
  4. Step 4: Simplify right side
    661,531.22x = 452,504,028,810.79
  5. Step 5: Solve for x
    x = 452,504,028,810.79/661,531.22
  6. Step 6: Final answer
    x = 684,025.21

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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.