Home / 678,871.13-1,018,437.83-258,114.29

Finding the Fourth Proportional to 678,871.13, 1,018,437.83 and 258,114.29

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Solution

The fourth proportional to 678,871.13, 1,018,437.83 and 258,114.29 is: 387,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,871.13 : 1,018,437.83 = 258,114.29 : x
  2. Step 2: Convert to fraction form
    678,871.13/1,018,437.83 = 258,114.29/x
  3. Step 3: Cross multiply
    678,871.13x = 1,018,437.83 × 258,114.29
  4. Step 4: Simplify right side
    678,871.13x = 262,873,351,016.83
  5. Step 5: Solve for x
    x = 262,873,351,016.83/678,871.13
  6. Step 6: Final answer
    x = 387,221.29

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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.