Home / 643,386,592.70-964,639,306.69-327,641,428.51

Finding the Fourth Proportional to 643,386,592.70, 964,639,306.69 and 327,641,428.51

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Solution

The fourth proportional to 643,386,592.70, 964,639,306.69 and 327,641,428.51 is: 491,237,778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,386,592.70 : 964,639,306.69 = 327,641,428.51 : x
  2. Step 2: Convert to fraction form
    643,386,592.70/964,639,306.69 = 327,641,428.51/x
  3. Step 3: Cross multiply
    643,386,592.70x = 964,639,306.69 × 327,641,428.51
  4. Step 4: Simplify right side
    643,386,592.70x = 316,055,800,439,414,976
  5. Step 5: Solve for x
    x = 316,055,800,439,414,976/643,386,592.70
  6. Step 6: Final answer
    x = 491,237,778.38

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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.