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Finding the Fourth Proportional to 516,860.34, 775,280.79 and 281,699.52

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Solution

The fourth proportional to 516,860.34, 775,280.79 and 281,699.52 is: 422,543.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,860.34 : 775,280.79 = 281,699.52 : x
  2. Step 2: Convert to fraction form
    516,860.34/775,280.79 = 281,699.52/x
  3. Step 3: Cross multiply
    516,860.34x = 775,280.79 × 281,699.52
  4. Step 4: Simplify right side
    516,860.34x = 218,396,226,408.22
  5. Step 5: Solve for x
    x = 218,396,226,408.22/516,860.34
  6. Step 6: Final answer
    x = 422,543.98

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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.