Home / 979,836.35-1,352,282.78-572,038.40

Finding the Fourth Proportional to 979,836.35, 1,352,282.78 and 572,038.40

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Solution

The fourth proportional to 979,836.35, 1,352,282.78 and 572,038.40 is: 789,476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,836.35 : 1,352,282.78 = 572,038.40 : x
  2. Step 2: Convert to fraction form
    979,836.35/1,352,282.78 = 572,038.40/x
  3. Step 3: Cross multiply
    979,836.35x = 1,352,282.78 × 572,038.40
  4. Step 4: Simplify right side
    979,836.35x = 773,557,682,629.56
  5. Step 5: Solve for x
    x = 773,557,682,629.56/979,836.35
  6. Step 6: Final answer
    x = 789,476.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.