Home / 711,436.72-1,067,156.90-290,712.60

Finding the Fourth Proportional to 711,436.72, 1,067,156.90 and 290,712.60

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Solution

The fourth proportional to 711,436.72, 1,067,156.90 and 290,712.60 is: 436,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,436.72 : 1,067,156.90 = 290,712.60 : x
  2. Step 2: Convert to fraction form
    711,436.72/1,067,156.90 = 290,712.60/x
  3. Step 3: Cross multiply
    711,436.72x = 1,067,156.90 × 290,712.60
  4. Step 4: Simplify right side
    711,436.72x = 310,235,957,006.94
  5. Step 5: Solve for x
    x = 310,235,957,006.94/711,436.72
  6. Step 6: Final answer
    x = 436,069.64

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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.