Home / 1,109,721.87-1,664,678.79-390,002.04

Finding the Fourth Proportional to 1,109,721.87, 1,664,678.79 and 390,002.04

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Solution

The fourth proportional to 1,109,721.87, 1,664,678.79 and 390,002.04 is: 585,036.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,721.87 : 1,664,678.79 = 390,002.04 : x
  2. Step 2: Convert to fraction form
    1,109,721.87/1,664,678.79 = 390,002.04/x
  3. Step 3: Cross multiply
    1,109,721.87x = 1,664,678.79 × 390,002.04
  4. Step 4: Simplify right side
    1,109,721.87x = 649,228,124,044.73
  5. Step 5: Solve for x
    x = 649,228,124,044.73/1,109,721.87
  6. Step 6: Final answer
    x = 585,036.79

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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.