Home / 781,780.54-1,171,143.66-538,578.70

Finding the Fourth Proportional to 781,780.54, 1,171,143.66 and 538,578.70

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Solution

The fourth proportional to 781,780.54, 1,171,143.66 and 538,578.70 is: 806,815.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,780.54 : 1,171,143.66 = 538,578.70 : x
  2. Step 2: Convert to fraction form
    781,780.54/1,171,143.66 = 538,578.70/x
  3. Step 3: Cross multiply
    781,780.54x = 1,171,143.66 × 538,578.70
  4. Step 4: Simplify right side
    781,780.54x = 630,753,029,916.04
  5. Step 5: Solve for x
    x = 630,753,029,916.04/781,780.54
  6. Step 6: Final answer
    x = 806,815.98

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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.