Home / 690,922.31-1,036,420.58-217,644.71

Finding the Fourth Proportional to 690,922.31, 1,036,420.58 and 217,644.71

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Solution

The fourth proportional to 690,922.31, 1,036,420.58 and 217,644.71 is: 326,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,922.31 : 1,036,420.58 = 217,644.71 : x
  2. Step 2: Convert to fraction form
    690,922.31/1,036,420.58 = 217,644.71/x
  3. Step 3: Cross multiply
    690,922.31x = 1,036,420.58 × 217,644.71
  4. Step 4: Simplify right side
    690,922.31x = 225,571,451,934.14
  5. Step 5: Solve for x
    x = 225,571,451,934.14/690,922.31
  6. Step 6: Final answer
    x = 326,478.75

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1.5x scale

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.