Home / 429,781.80-643,786.74-251,749.07

Finding the Fourth Proportional to 429,781.80, 643,786.74 and 251,749.07

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Solution

The fourth proportional to 429,781.80, 643,786.74 and 251,749.07 is: 377,104.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,781.80 : 643,786.74 = 251,749.07 : x
  2. Step 2: Convert to fraction form
    429,781.80/643,786.74 = 251,749.07/x
  3. Step 3: Cross multiply
    429,781.80x = 643,786.74 × 251,749.07
  4. Step 4: Simplify right side
    429,781.80x = 162,072,709,854.40
  5. Step 5: Solve for x
    x = 162,072,709,854.40/429,781.80
  6. Step 6: Final answer
    x = 377,104.64

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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.