Home / 686,066.90-1,029,791.55-331,366.10

Finding the Fourth Proportional to 686,066.90, 1,029,791.55 and 331,366.10

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Solution

The fourth proportional to 686,066.90, 1,029,791.55 and 331,366.10 is: 497,383.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,066.90 : 1,029,791.55 = 331,366.10 : x
  2. Step 2: Convert to fraction form
    686,066.90/1,029,791.55 = 331,366.10/x
  3. Step 3: Cross multiply
    686,066.90x = 1,029,791.55 × 331,366.10
  4. Step 4: Simplify right side
    686,066.90x = 341,238,009,736.46
  5. Step 5: Solve for x
    x = 341,238,009,736.46/686,066.90
  6. Step 6: Final answer
    x = 497,383.00

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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.