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Finding the Fourth Proportional to 519,394.28, 779,338.15 and 359,715.94

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Solution

The fourth proportional to 519,394.28, 779,338.15 and 359,715.94 is: 539,744.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,394.28 : 779,338.15 = 359,715.94 : x
  2. Step 2: Convert to fraction form
    519,394.28/779,338.15 = 359,715.94/x
  3. Step 3: Cross multiply
    519,394.28x = 779,338.15 × 359,715.94
  4. Step 4: Simplify right side
    519,394.28x = 280,340,351,458.19
  5. Step 5: Solve for x
    x = 280,340,351,458.19/519,394.28
  6. Step 6: Final answer
    x = 539,744.79

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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.