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Finding the Fourth Proportional to 662,955.80, 914,854.82 and 405,264.33

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Solution

The fourth proportional to 662,955.80, 914,854.82 and 405,264.33 is: 559,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,955.80 : 914,854.82 = 405,264.33 : x
  2. Step 2: Convert to fraction form
    662,955.80/914,854.82 = 405,264.33/x
  3. Step 3: Cross multiply
    662,955.80x = 914,854.82 × 405,264.33
  4. Step 4: Simplify right side
    662,955.80x = 370,758,023,648.25
  5. Step 5: Solve for x
    x = 370,758,023,648.25/662,955.80
  6. Step 6: Final answer
    x = 559,249.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.