Home / 678,940.80-1,018,521.12-229,688.88

Finding the Fourth Proportional to 678,940.80, 1,018,521.12 and 229,688.88

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Solution

The fourth proportional to 678,940.80, 1,018,521.12 and 229,688.88 is: 344,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,940.80 : 1,018,521.12 = 229,688.88 : x
  2. Step 2: Convert to fraction form
    678,940.80/1,018,521.12 = 229,688.88/x
  3. Step 3: Cross multiply
    678,940.80x = 1,018,521.12 × 229,688.88
  4. Step 4: Simplify right side
    678,940.80x = 233,942,975,309.15
  5. Step 5: Solve for x
    x = 233,942,975,309.15/678,940.80
  6. Step 6: Final answer
    x = 344,570.51

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1.5x scale

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.