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Finding the Fourth Proportional to 509,371.59, 702,898.79 and 279,923.94

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Solution

The fourth proportional to 509,371.59, 702,898.79 and 279,923.94 is: 386,276.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,371.59 : 702,898.79 = 279,923.94 : x
  2. Step 2: Convert to fraction form
    509,371.59/702,898.79 = 279,923.94/x
  3. Step 3: Cross multiply
    509,371.59x = 702,898.79 × 279,923.94
  4. Step 4: Simplify right side
    509,371.59x = 196,758,198,718.03
  5. Step 5: Solve for x
    x = 196,758,198,718.03/509,371.59
  6. Step 6: Final answer
    x = 386,276.35

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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.