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Finding the Fourth Proportional to 518,933.37, 778,432.86 and 219,374.52

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Solution

The fourth proportional to 518,933.37, 778,432.86 and 219,374.52 is: 329,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,933.37 : 778,432.86 = 219,374.52 : x
  2. Step 2: Convert to fraction form
    518,933.37/778,432.86 = 219,374.52/x
  3. Step 3: Cross multiply
    518,933.37x = 778,432.86 × 219,374.52
  4. Step 4: Simplify right side
    518,933.37x = 170,768,335,014.73
  5. Step 5: Solve for x
    x = 170,768,335,014.73/518,933.37
  6. Step 6: Final answer
    x = 329,075.65

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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.