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Finding the Fourth Proportional to 675,168.60, 931,847.24 and 388,854.46

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Solution

The fourth proportional to 675,168.60, 931,847.24 and 388,854.46 is: 536,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,168.60 : 931,847.24 = 388,854.46 : x
  2. Step 2: Convert to fraction form
    675,168.60/931,847.24 = 388,854.46/x
  3. Step 3: Cross multiply
    675,168.60x = 931,847.24 × 388,854.46
  4. Step 4: Simplify right side
    675,168.60x = 362,352,953,955.21
  5. Step 5: Solve for x
    x = 362,352,953,955.21/675,168.60
  6. Step 6: Final answer
    x = 536,685.14

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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.