Home / 817,726.80-1,226,841.48-418,647.72

Finding the Fourth Proportional to 817,726.80, 1,226,841.48 and 418,647.72

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Solution

The fourth proportional to 817,726.80, 1,226,841.48 and 418,647.72 is: 628,100.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,726.80 : 1,226,841.48 = 418,647.72 : x
  2. Step 2: Convert to fraction form
    817,726.80/1,226,841.48 = 418,647.72/x
  3. Step 3: Cross multiply
    817,726.80x = 1,226,841.48 × 418,647.72
  4. Step 4: Simplify right side
    817,726.80x = 513,614,388,403.43
  5. Step 5: Solve for x
    x = 513,614,388,403.43/817,726.80
  6. Step 6: Final answer
    x = 628,100.23

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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.