Home / 853,816.80-1,279,040.40-433,394.40

Finding the Fourth Proportional to 853,816.80, 1,279,040.40 and 433,394.40

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Solution

The fourth proportional to 853,816.80, 1,279,040.40 and 433,394.40 is: 649,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,816.80 : 1,279,040.40 = 433,394.40 : x
  2. Step 2: Convert to fraction form
    853,816.80/1,279,040.40 = 433,394.40/x
  3. Step 3: Cross multiply
    853,816.80x = 1,279,040.40 × 433,394.40
  4. Step 4: Simplify right side
    853,816.80x = 554,328,946,733.76
  5. Step 5: Solve for x
    x = 554,328,946,733.76/853,816.80
  6. Step 6: Final answer
    x = 649,236.40

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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.