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Finding the Fourth Proportional to 529,760.40, 793,328.40 and 339,928.80

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Solution

The fourth proportional to 529,760.40, 793,328.40 and 339,928.80 is: 509,051.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,760.40 : 793,328.40 = 339,928.80 : x
  2. Step 2: Convert to fraction form
    529,760.40/793,328.40 = 339,928.80/x
  3. Step 3: Cross multiply
    529,760.40x = 793,328.40 × 339,928.80
  4. Step 4: Simplify right side
    529,760.40x = 269,675,171,017.92
  5. Step 5: Solve for x
    x = 269,675,171,017.92/529,760.40
  6. Step 6: Final answer
    x = 509,051.21

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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.