Home / 678,577.66-1,016,315.77-323,840.79

Finding the Fourth Proportional to 678,577.66, 1,016,315.77 and 323,840.79

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Solution

The fourth proportional to 678,577.66, 1,016,315.77 and 323,840.79 is: 485,021.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,577.66 : 1,016,315.77 = 323,840.79 : x
  2. Step 2: Convert to fraction form
    678,577.66/1,016,315.77 = 323,840.79/x
  3. Step 3: Cross multiply
    678,577.66x = 1,016,315.77 × 323,840.79
  4. Step 4: Simplify right side
    678,577.66x = 329,124,501,036.66
  5. Step 5: Solve for x
    x = 329,124,501,036.66/678,577.66
  6. Step 6: Final answer
    x = 485,021.13

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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.