Home / 869,187.76-1,199,475.34-487,214.54

Finding the Fourth Proportional to 869,187.76, 1,199,475.34 and 487,214.54

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Solution

The fourth proportional to 869,187.76, 1,199,475.34 and 487,214.54 is: 672,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,187.76 : 1,199,475.34 = 487,214.54 : x
  2. Step 2: Convert to fraction form
    869,187.76/1,199,475.34 = 487,214.54/x
  3. Step 3: Cross multiply
    869,187.76x = 1,199,475.34 × 487,214.54
  4. Step 4: Simplify right side
    869,187.76x = 584,401,830,049.11
  5. Step 5: Solve for x
    x = 584,401,830,049.11/869,187.76
  6. Step 6: Final answer
    x = 672,353.95

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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.