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Finding the Fourth Proportional to 528,414.75, 729,212.40 and 302,065.11

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Solution

The fourth proportional to 528,414.75, 729,212.40 and 302,065.11 is: 416,849.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,414.75 : 729,212.40 = 302,065.11 : x
  2. Step 2: Convert to fraction form
    528,414.75/729,212.40 = 302,065.11/x
  3. Step 3: Cross multiply
    528,414.75x = 729,212.40 × 302,065.11
  4. Step 4: Simplify right side
    528,414.75x = 220,269,623,819.36
  5. Step 5: Solve for x
    x = 220,269,623,819.36/528,414.75
  6. Step 6: Final answer
    x = 416,849.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.