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Finding the Fourth Proportional to 668,241.81, 1,002,165.89 and 518,651.01

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Solution

The fourth proportional to 668,241.81, 1,002,165.89 and 518,651.01 is: 777,823.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,241.81 : 1,002,165.89 = 518,651.01 : x
  2. Step 2: Convert to fraction form
    668,241.81/1,002,165.89 = 518,651.01/x
  3. Step 3: Cross multiply
    668,241.81x = 1,002,165.89 × 518,651.01
  4. Step 4: Simplify right side
    668,241.81x = 519,774,348,442.79
  5. Step 5: Solve for x
    x = 519,774,348,442.79/668,241.81
  6. Step 6: Final answer
    x = 777,823.75

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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.