Home / 690,787.84-1,036,256-217,487.36

Finding the Fourth Proportional to 690,787.84, 1,036,256 and 217,487.36

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Solution

The fourth proportional to 690,787.84, 1,036,256 and 217,487.36 is: 326,254.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,787.84 : 1,036,256 = 217,487.36 : x
  2. Step 2: Convert to fraction form
    690,787.84/1,036,256 = 217,487.36/x
  3. Step 3: Cross multiply
    690,787.84x = 1,036,256 × 217,487.36
  4. Step 4: Simplify right side
    690,787.84x = 225,372,581,724.16
  5. Step 5: Solve for x
    x = 225,372,581,724.16/690,787.84
  6. Step 6: Final answer
    x = 326,254.41

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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.