Home / 817,699.20-1,226,111.40-343,849.20

Finding the Fourth Proportional to 817,699.20, 1,226,111.40 and 343,849.20

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Solution

The fourth proportional to 817,699.20, 1,226,111.40 and 343,849.20 is: 515,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,699.20 : 1,226,111.40 = 343,849.20 : x
  2. Step 2: Convert to fraction form
    817,699.20/1,226,111.40 = 343,849.20/x
  3. Step 3: Cross multiply
    817,699.20x = 1,226,111.40 × 343,849.20
  4. Step 4: Simplify right side
    817,699.20x = 421,597,424,000.88
  5. Step 5: Solve for x
    x = 421,597,424,000.88/817,699.20
  6. Step 6: Final answer
    x = 515,589.87

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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.