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Finding the Fourth Proportional to 519,390.26, 779,359.62 and 368,561.88

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Solution

The fourth proportional to 519,390.26, 779,359.62 and 368,561.88 is: 553,037.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,390.26 : 779,359.62 = 368,561.88 : x
  2. Step 2: Convert to fraction form
    519,390.26/779,359.62 = 368,561.88/x
  3. Step 3: Cross multiply
    519,390.26x = 779,359.62 × 368,561.88
  4. Step 4: Simplify right side
    519,390.26x = 287,242,248,125.39
  5. Step 5: Solve for x
    x = 287,242,248,125.39/519,390.26
  6. Step 6: Final answer
    x = 553,037.42

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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.