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Finding the Fourth Proportional to 528,299.87, 791,928.54 and 338,219.19

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Solution

The fourth proportional to 528,299.87, 791,928.54 and 338,219.19 is: 506,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,299.87 : 791,928.54 = 338,219.19 : x
  2. Step 2: Convert to fraction form
    528,299.87/791,928.54 = 338,219.19/x
  3. Step 3: Cross multiply
    528,299.87x = 791,928.54 × 338,219.19
  4. Step 4: Simplify right side
    528,299.87x = 267,845,429,336.68
  5. Step 5: Solve for x
    x = 267,845,429,336.68/528,299.87
  6. Step 6: Final answer
    x = 506,995.07

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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.