Home / 853,086.88-1,176,719.20-648,689.70

Finding the Fourth Proportional to 853,086.88, 1,176,719.20 and 648,689.70

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Solution

The fourth proportional to 853,086.88, 1,176,719.20 and 648,689.70 is: 894,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,086.88 : 1,176,719.20 = 648,689.70 : x
  2. Step 2: Convert to fraction form
    853,086.88/1,176,719.20 = 648,689.70/x
  3. Step 3: Cross multiply
    853,086.88x = 1,176,719.20 × 648,689.70
  4. Step 4: Simplify right side
    853,086.88x = 763,325,624,832.24
  5. Step 5: Solve for x
    x = 763,325,624,832.24/853,086.88
  6. Step 6: Final answer
    x = 894,780.64

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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.