Home / 711,436.91-1,067,157.18-290,712.78

Finding the Fourth Proportional to 711,436.91, 1,067,157.18 and 290,712.78

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Solution

The fourth proportional to 711,436.91, 1,067,157.18 and 290,712.78 is: 436,069.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,436.91 : 1,067,157.18 = 290,712.78 : x
  2. Step 2: Convert to fraction form
    711,436.91/1,067,157.18 = 290,712.78/x
  3. Step 3: Cross multiply
    711,436.91x = 1,067,157.18 × 290,712.78
  4. Step 4: Simplify right side
    711,436.91x = 310,236,230,494.76
  5. Step 5: Solve for x
    x = 310,236,230,494.76/711,436.91
  6. Step 6: Final answer
    x = 436,069.91

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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.