Home / 1,005,076.95-1,387,329.44-643,474.73

Finding the Fourth Proportional to 1,005,076.95, 1,387,329.44 and 643,474.73

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Solution

The fourth proportional to 1,005,076.95, 1,387,329.44 and 643,474.73 is: 888,202.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,076.95 : 1,387,329.44 = 643,474.73 : x
  2. Step 2: Convert to fraction form
    1,005,076.95/1,387,329.44 = 643,474.73/x
  3. Step 3: Cross multiply
    1,005,076.95x = 1,387,329.44 × 643,474.73
  4. Step 4: Simplify right side
    1,005,076.95x = 892,711,436,825.05
  5. Step 5: Solve for x
    x = 892,711,436,825.05/1,005,076.95
  6. Step 6: Final answer
    x = 888,202.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.