Home / 687,905.40-1,032,003.90-208,093.80

Finding the Fourth Proportional to 687,905.40, 1,032,003.90 and 208,093.80

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Solution

The fourth proportional to 687,905.40, 1,032,003.90 and 208,093.80 is: 312,184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,905.40 : 1,032,003.90 = 208,093.80 : x
  2. Step 2: Convert to fraction form
    687,905.40/1,032,003.90 = 208,093.80/x
  3. Step 3: Cross multiply
    687,905.40x = 1,032,003.90 × 208,093.80
  4. Step 4: Simplify right side
    687,905.40x = 214,753,613,165.82
  5. Step 5: Solve for x
    x = 214,753,613,165.82/687,905.40
  6. Step 6: Final answer
    x = 312,184.81

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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.