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Finding the Fourth Proportional to 701,739.87, 968,406.48 and 387,421.50

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Solution

The fourth proportional to 701,739.87, 968,406.48 and 387,421.50 is: 534,644.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,739.87 : 968,406.48 = 387,421.50 : x
  2. Step 2: Convert to fraction form
    701,739.87/968,406.48 = 387,421.50/x
  3. Step 3: Cross multiply
    701,739.87x = 968,406.48 × 387,421.50
  4. Step 4: Simplify right side
    701,739.87x = 375,181,491,091.32
  5. Step 5: Solve for x
    x = 375,181,491,091.32/701,739.87
  6. Step 6: Final answer
    x = 534,644.68

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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.