Home / 690,420.60-1,036,019.70-269,641.80

Finding the Fourth Proportional to 690,420.60, 1,036,019.70 and 269,641.80

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Solution

The fourth proportional to 690,420.60, 1,036,019.70 and 269,641.80 is: 404,614.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,420.60 : 1,036,019.70 = 269,641.80 : x
  2. Step 2: Convert to fraction form
    690,420.60/1,036,019.70 = 269,641.80/x
  3. Step 3: Cross multiply
    690,420.60x = 1,036,019.70 × 269,641.80
  4. Step 4: Simplify right side
    690,420.60x = 279,354,216,743.46
  5. Step 5: Solve for x
    x = 279,354,216,743.46/690,420.60
  6. Step 6: Final answer
    x = 404,614.54

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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.