Home / 690,842.65-1,036,409.78-217,575.85

Finding the Fourth Proportional to 690,842.65, 1,036,409.78 and 217,575.85

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Solution

The fourth proportional to 690,842.65, 1,036,409.78 and 217,575.85 is: 326,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,842.65 : 1,036,409.78 = 217,575.85 : x
  2. Step 2: Convert to fraction form
    690,842.65/1,036,409.78 = 217,575.85/x
  3. Step 3: Cross multiply
    690,842.65x = 1,036,409.78 × 217,575.85
  4. Step 4: Simplify right side
    690,842.65x = 225,497,738,831.81
  5. Step 5: Solve for x
    x = 225,497,738,831.81/690,842.65
  6. Step 6: Final answer
    x = 326,409.70

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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.