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Finding the Fourth Proportional to 712,818.44, 984,987.06 and 678,268.68

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Solution

The fourth proportional to 712,818.44, 984,987.06 and 678,268.68 is: 937,245.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,818.44 : 984,987.06 = 678,268.68 : x
  2. Step 2: Convert to fraction form
    712,818.44/984,987.06 = 678,268.68/x
  3. Step 3: Cross multiply
    712,818.44x = 984,987.06 × 678,268.68
  4. Step 4: Simplify right side
    712,818.44x = 668,085,873,003.28
  5. Step 5: Solve for x
    x = 668,085,873,003.28/712,818.44
  6. Step 6: Final answer
    x = 937,245.50

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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.