Home / 865,806.31-1,298,919.64-266,767.45

Finding the Fourth Proportional to 865,806.31, 1,298,919.64 and 266,767.45

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Solution

The fourth proportional to 865,806.31, 1,298,919.64 and 266,767.45 is: 400,215.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,806.31 : 1,298,919.64 = 266,767.45 : x
  2. Step 2: Convert to fraction form
    865,806.31/1,298,919.64 = 266,767.45/x
  3. Step 3: Cross multiply
    865,806.31x = 1,298,919.64 × 266,767.45
  4. Step 4: Simplify right side
    865,806.31x = 346,509,477,203.88
  5. Step 5: Solve for x
    x = 346,509,477,203.88/865,806.31
  6. Step 6: Final answer
    x = 400,215.93

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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.