Home / 690,897.76-1,036,346.68-269,878.40

Finding the Fourth Proportional to 690,897.76, 1,036,346.68 and 269,878.40

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Solution

The fourth proportional to 690,897.76, 1,036,346.68 and 269,878.40 is: 404,817.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,897.76 : 1,036,346.68 = 269,878.40 : x
  2. Step 2: Convert to fraction form
    690,897.76/1,036,346.68 = 269,878.40/x
  3. Step 3: Cross multiply
    690,897.76x = 1,036,346.68 × 269,878.40
  4. Step 4: Simplify right side
    690,897.76x = 279,687,583,843.71
  5. Step 5: Solve for x
    x = 279,687,583,843.71/690,897.76
  6. Step 6: Final answer
    x = 404,817.62

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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.