Home / 812,848.40-1,121,682.80-445,252.43

Finding the Fourth Proportional to 812,848.40, 1,121,682.80 and 445,252.43

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Solution

The fourth proportional to 812,848.40, 1,121,682.80 and 445,252.43 is: 614,422.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,848.40 : 1,121,682.80 = 445,252.43 : x
  2. Step 2: Convert to fraction form
    812,848.40/1,121,682.80 = 445,252.43/x
  3. Step 3: Cross multiply
    812,848.40x = 1,121,682.80 × 445,252.43
  4. Step 4: Simplify right side
    812,848.40x = 499,431,996,306.54
  5. Step 5: Solve for x
    x = 499,431,996,306.54/812,848.40
  6. Step 6: Final answer
    x = 614,422.07

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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.