Home / 672,936.20-928,417.45-431,351.98

Finding the Fourth Proportional to 672,936.20, 928,417.45 and 431,351.98

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Solution

The fourth proportional to 672,936.20, 928,417.45 and 431,351.98 is: 595,115.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,936.20 : 928,417.45 = 431,351.98 : x
  2. Step 2: Convert to fraction form
    672,936.20/928,417.45 = 431,351.98/x
  3. Step 3: Cross multiply
    672,936.20x = 928,417.45 × 431,351.98
  4. Step 4: Simplify right side
    672,936.20x = 400,474,705,324.05
  5. Step 5: Solve for x
    x = 400,474,705,324.05/672,936.20
  6. Step 6: Final answer
    x = 595,115.41

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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.