Home / 853,889.20-1,279,451.40-537,780.40

Finding the Fourth Proportional to 853,889.20, 1,279,451.40 and 537,780.40

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Solution

The fourth proportional to 853,889.20, 1,279,451.40 and 537,780.40 is: 805,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,889.20 : 1,279,451.40 = 537,780.40 : x
  2. Step 2: Convert to fraction form
    853,889.20/1,279,451.40 = 537,780.40/x
  3. Step 3: Cross multiply
    853,889.20x = 1,279,451.40 × 537,780.40
  4. Step 4: Simplify right side
    853,889.20x = 688,063,885,672.56
  5. Step 5: Solve for x
    x = 688,063,885,672.56/853,889.20
  6. Step 6: Final answer
    x = 805,799.96

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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.