Home / 711,409.91-1,067,116.68-290,685.78

Finding the Fourth Proportional to 711,409.91, 1,067,116.68 and 290,685.78

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Solution

The fourth proportional to 711,409.91, 1,067,116.68 and 290,685.78 is: 436,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,409.91 : 1,067,116.68 = 290,685.78 : x
  2. Step 2: Convert to fraction form
    711,409.91/1,067,116.68 = 290,685.78/x
  3. Step 3: Cross multiply
    711,409.91x = 1,067,116.68 × 290,685.78
  4. Step 4: Simplify right side
    711,409.91x = 310,195,644,476.81
  5. Step 5: Solve for x
    x = 310,195,644,476.81/711,409.91
  6. Step 6: Final answer
    x = 436,029.41

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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.