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Finding the Fourth Proportional to 519,691.20, 778,953.60 and 295,159.20

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Solution

The fourth proportional to 519,691.20, 778,953.60 and 295,159.20 is: 442,407.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,691.20 : 778,953.60 = 295,159.20 : x
  2. Step 2: Convert to fraction form
    519,691.20/778,953.60 = 295,159.20/x
  3. Step 3: Cross multiply
    519,691.20x = 778,953.60 × 295,159.20
  4. Step 4: Simplify right side
    519,691.20x = 229,915,321,413.12
  5. Step 5: Solve for x
    x = 229,915,321,413.12/519,691.20
  6. Step 6: Final answer
    x = 442,407.57

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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.