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Finding the Fourth Proportional to 857,991, 1,287,343.44 and 377,973.12

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Solution

The fourth proportional to 857,991, 1,287,343.44 and 377,973.12 is: 567,116.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,991 : 1,287,343.44 = 377,973.12 : x
  2. Step 2: Convert to fraction form
    857,991/1,287,343.44 = 377,973.12/x
  3. Step 3: Cross multiply
    857,991x = 1,287,343.44 × 377,973.12
  4. Step 4: Simplify right side
    857,991x = 486,581,216,528.33
  5. Step 5: Solve for x
    x = 486,581,216,528.33/857,991
  6. Step 6: Final answer
    x = 567,116.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.