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Finding the Fourth Proportional to 520,327.50, 779,869.98 and 267,729

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Solution

The fourth proportional to 520,327.50, 779,869.98 and 267,729 is: 401,273.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,327.50 : 779,869.98 = 267,729 : x
  2. Step 2: Convert to fraction form
    520,327.50/779,869.98 = 267,729/x
  3. Step 3: Cross multiply
    520,327.50x = 779,869.98 × 267,729
  4. Step 4: Simplify right side
    520,327.50x = 208,793,809,875.42
  5. Step 5: Solve for x
    x = 208,793,809,875.42/520,327.50
  6. Step 6: Final answer
    x = 401,273.83

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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.