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Finding the Fourth Proportional to 709,333.20, 978,893.91 and 387,052.02

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Solution

The fourth proportional to 709,333.20, 978,893.91 and 387,052.02 is: 534,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,333.20 : 978,893.91 = 387,052.02 : x
  2. Step 2: Convert to fraction form
    709,333.20/978,893.91 = 387,052.02/x
  3. Step 3: Cross multiply
    709,333.20x = 978,893.91 × 387,052.02
  4. Step 4: Simplify right side
    709,333.20x = 378,882,865,231.20
  5. Step 5: Solve for x
    x = 378,882,865,231.20/709,333.20
  6. Step 6: Final answer
    x = 534,139.48

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