Home / 1,321,178.60-1,981,046.71-397,799.87

Finding the Fourth Proportional to 1,321,178.60, 1,981,046.71 and 397,799.87

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Solution

The fourth proportional to 1,321,178.60, 1,981,046.71 and 397,799.87 is: 596,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,178.60 : 1,981,046.71 = 397,799.87 : x
  2. Step 2: Convert to fraction form
    1,321,178.60/1,981,046.71 = 397,799.87/x
  3. Step 3: Cross multiply
    1,321,178.60x = 1,981,046.71 × 397,799.87
  4. Step 4: Simplify right side
    1,321,178.60x = 788,060,112,802.20
  5. Step 5: Solve for x
    x = 788,060,112,802.20/1,321,178.60
  6. Step 6: Final answer
    x = 596,482.65

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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.