Home / 678,628.28-1,018,054.20-229,376.36

Finding the Fourth Proportional to 678,628.28, 1,018,054.20 and 229,376.36

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Solution

The fourth proportional to 678,628.28, 1,018,054.20 and 229,376.36 is: 344,102.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,628.28 : 1,018,054.20 = 229,376.36 : x
  2. Step 2: Convert to fraction form
    678,628.28/1,018,054.20 = 229,376.36/x
  3. Step 3: Cross multiply
    678,628.28x = 1,018,054.20 × 229,376.36
  4. Step 4: Simplify right side
    678,628.28x = 233,517,566,678.71
  5. Step 5: Solve for x
    x = 233,517,566,678.71/678,628.28
  6. Step 6: Final answer
    x = 344,102.32

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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.