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Finding the Fourth Proportional to 708,752.05, 978,056.44 and 386,468.44

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Solution

The fourth proportional to 708,752.05, 978,056.44 and 386,468.44 is: 533,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,752.05 : 978,056.44 = 386,468.44 : x
  2. Step 2: Convert to fraction form
    708,752.05/978,056.44 = 386,468.44/x
  3. Step 3: Cross multiply
    708,752.05x = 978,056.44 × 386,468.44
  4. Step 4: Simplify right side
    708,752.05x = 377,987,943,187.44
  5. Step 5: Solve for x
    x = 377,987,943,187.44/708,752.05
  6. Step 6: Final answer
    x = 533,314.78

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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.