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Finding the Fourth Proportional to 521,941.51, 720,626.34 and 400,866.49

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Solution

The fourth proportional to 521,941.51, 720,626.34 and 400,866.49 is: 553,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,941.51 : 720,626.34 = 400,866.49 : x
  2. Step 2: Convert to fraction form
    521,941.51/720,626.34 = 400,866.49/x
  3. Step 3: Cross multiply
    521,941.51x = 720,626.34 × 400,866.49
  4. Step 4: Simplify right side
    521,941.51x = 288,874,951,517.35
  5. Step 5: Solve for x
    x = 288,874,951,517.35/521,941.51
  6. Step 6: Final answer
    x = 553,462.31

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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.