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Finding the Fourth Proportional to 529,328.40, 792,680.40 and 339,496.80

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Solution

The fourth proportional to 529,328.40, 792,680.40 and 339,496.80 is: 508,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,328.40 : 792,680.40 = 339,496.80 : x
  2. Step 2: Convert to fraction form
    529,328.40/792,680.40 = 339,496.80/x
  3. Step 3: Cross multiply
    529,328.40x = 792,680.40 × 339,496.80
  4. Step 4: Simplify right side
    529,328.40x = 269,112,459,222.72
  5. Step 5: Solve for x
    x = 269,112,459,222.72/529,328.40
  6. Step 6: Final answer
    x = 508,403.59

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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.