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Finding the Fourth Proportional to 492,844.51, 679,958.36 and 402,043.51

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Solution

The fourth proportional to 492,844.51, 679,958.36 and 402,043.51 is: 554,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,844.51 : 679,958.36 = 402,043.51 : x
  2. Step 2: Convert to fraction form
    492,844.51/679,958.36 = 402,043.51/x
  3. Step 3: Cross multiply
    492,844.51x = 679,958.36 × 402,043.51
  4. Step 4: Simplify right side
    492,844.51x = 273,372,842,308.45
  5. Step 5: Solve for x
    x = 273,372,842,308.45/492,844.51
  6. Step 6: Final answer
    x = 554,683.76

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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.