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Finding the Fourth Proportional to 529,736.40, 793,292.40 and 339,904.80

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Solution

The fourth proportional to 529,736.40, 793,292.40 and 339,904.80 is: 509,015.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,736.40 : 793,292.40 = 339,904.80 : x
  2. Step 2: Convert to fraction form
    529,736.40/793,292.40 = 339,904.80/x
  3. Step 3: Cross multiply
    529,736.40x = 793,292.40 × 339,904.80
  4. Step 4: Simplify right side
    529,736.40x = 269,643,894,563.52
  5. Step 5: Solve for x
    x = 269,643,894,563.52/529,736.40
  6. Step 6: Final answer
    x = 509,015.23

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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.