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Finding the Fourth Proportional to 521,665.52, 719,905.91 and 303,868.62

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Solution

The fourth proportional to 521,665.52, 719,905.91 and 303,868.62 is: 419,343.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,665.52 : 719,905.91 = 303,868.62 : x
  2. Step 2: Convert to fraction form
    521,665.52/719,905.91 = 303,868.62/x
  3. Step 3: Cross multiply
    521,665.52x = 719,905.91 × 303,868.62
  4. Step 4: Simplify right side
    521,665.52x = 218,756,813,882.20
  5. Step 5: Solve for x
    x = 218,756,813,882.20/521,665.52
  6. Step 6: Final answer
    x = 419,343.06

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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.