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Finding the Fourth Proportional to 528,453.20, 792,679.80 and 339,496.40

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Solution

The fourth proportional to 528,453.20, 792,679.80 and 339,496.40 is: 509,244.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,453.20 : 792,679.80 = 339,496.40 : x
  2. Step 2: Convert to fraction form
    528,453.20/792,679.80 = 339,496.40/x
  3. Step 3: Cross multiply
    528,453.20x = 792,679.80 × 339,496.40
  4. Step 4: Simplify right side
    528,453.20x = 269,111,938,452.72
  5. Step 5: Solve for x
    x = 269,111,938,452.72/528,453.20
  6. Step 6: Final answer
    x = 509,244.60

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Similar ratio
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1.5x scale

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.