Home / 853,660.80-1,278,806.40-433,238.40

Finding the Fourth Proportional to 853,660.80, 1,278,806.40 and 433,238.40

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Solution

The fourth proportional to 853,660.80, 1,278,806.40 and 433,238.40 is: 649,002.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,660.80 : 1,278,806.40 = 433,238.40 : x
  2. Step 2: Convert to fraction form
    853,660.80/1,278,806.40 = 433,238.40/x
  3. Step 3: Cross multiply
    853,660.80x = 1,278,806.40 × 433,238.40
  4. Step 4: Simplify right side
    853,660.80x = 554,028,038,645.76
  5. Step 5: Solve for x
    x = 554,028,038,645.76/853,660.80
  6. Step 6: Final answer
    x = 649,002.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.