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Finding the Fourth Proportional to 621,846, 932,715.28 and 378,623.92

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Solution

The fourth proportional to 621,846, 932,715.28 and 378,623.92 is: 567,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,846 : 932,715.28 = 378,623.92 : x
  2. Step 2: Convert to fraction form
    621,846/932,715.28 = 378,623.92/x
  3. Step 3: Cross multiply
    621,846x = 932,715.28 × 378,623.92
  4. Step 4: Simplify right side
    621,846x = 353,148,315,557.50
  5. Step 5: Solve for x
    x = 353,148,315,557.50/621,846
  6. Step 6: Final answer
    x = 567,903.17

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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.