Home / 638,788.84-959,574.18-386,188.29

Finding the Fourth Proportional to 638,788.84, 959,574.18 and 386,188.29

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Solution

The fourth proportional to 638,788.84, 959,574.18 and 386,188.29 is: 580,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,788.84 : 959,574.18 = 386,188.29 : x
  2. Step 2: Convert to fraction form
    638,788.84/959,574.18 = 386,188.29/x
  3. Step 3: Cross multiply
    638,788.84x = 959,574.18 × 386,188.29
  4. Step 4: Simplify right side
    638,788.84x = 370,576,311,702.35
  5. Step 5: Solve for x
    x = 370,576,311,702.35/638,788.84
  6. Step 6: Final answer
    x = 580,123.33

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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.