Home / 853,699.10-1,178,171.97-486,191.87

Finding the Fourth Proportional to 853,699.10, 1,178,171.97 and 486,191.87

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Solution

The fourth proportional to 853,699.10, 1,178,171.97 and 486,191.87 is: 670,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,699.10 : 1,178,171.97 = 486,191.87 : x
  2. Step 2: Convert to fraction form
    853,699.10/1,178,171.97 = 486,191.87/x
  3. Step 3: Cross multiply
    853,699.10x = 1,178,171.97 × 486,191.87
  4. Step 4: Simplify right side
    853,699.10x = 572,817,633,275.88
  5. Step 5: Solve for x
    x = 572,817,633,275.88/853,699.10
  6. Step 6: Final answer
    x = 670,983.06

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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.