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Finding the Fourth Proportional to 519,359.18, 779,313.05 and 368,530.87

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Solution

The fourth proportional to 519,359.18, 779,313.05 and 368,530.87 is: 552,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,359.18 : 779,313.05 = 368,530.87 : x
  2. Step 2: Convert to fraction form
    519,359.18/779,313.05 = 368,530.87/x
  3. Step 3: Cross multiply
    519,359.18x = 779,313.05 × 368,530.87
  4. Step 4: Simplify right side
    519,359.18x = 287,200,917,523.33
  5. Step 5: Solve for x
    x = 287,200,917,523.33/519,359.18
  6. Step 6: Final answer
    x = 552,990.94

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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.