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Finding the Fourth Proportional to 668,687.76, 922,772.44 and 374,333.36

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Solution

The fourth proportional to 668,687.76, 922,772.44 and 374,333.36 is: 516,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,687.76 : 922,772.44 = 374,333.36 : x
  2. Step 2: Convert to fraction form
    668,687.76/922,772.44 = 374,333.36/x
  3. Step 3: Cross multiply
    668,687.76x = 922,772.44 × 374,333.36
  4. Step 4: Simplify right side
    668,687.76x = 345,424,507,980.60
  5. Step 5: Solve for x
    x = 345,424,507,980.60/668,687.76
  6. Step 6: Final answer
    x = 516,570.71

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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.