Home / 865,908.82-1,298,985.54-266,918.68

Finding the Fourth Proportional to 865,908.82, 1,298,985.54 and 266,918.68

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Solution

The fourth proportional to 865,908.82, 1,298,985.54 and 266,918.68 is: 400,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,908.82 : 1,298,985.54 = 266,918.68 : x
  2. Step 2: Convert to fraction form
    865,908.82/1,298,985.54 = 266,918.68/x
  3. Step 3: Cross multiply
    865,908.82x = 1,298,985.54 × 266,918.68
  4. Step 4: Simplify right side
    865,908.82x = 346,723,505,675.89
  5. Step 5: Solve for x
    x = 346,723,505,675.89/865,908.82
  6. Step 6: Final answer
    x = 400,415.72

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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.