Home / 718,872.45-992,043.93-396,582.56

Finding the Fourth Proportional to 718,872.45, 992,043.93 and 396,582.56

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Solution

The fourth proportional to 718,872.45, 992,043.93 and 396,582.56 is: 547,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,872.45 : 992,043.93 = 396,582.56 : x
  2. Step 2: Convert to fraction form
    718,872.45/992,043.93 = 396,582.56/x
  3. Step 3: Cross multiply
    718,872.45x = 992,043.93 × 396,582.56
  4. Step 4: Simplify right side
    718,872.45x = 393,427,314,448.73
  5. Step 5: Solve for x
    x = 393,427,314,448.73/718,872.45
  6. Step 6: Final answer
    x = 547,283.90

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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.