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Finding the Fourth Proportional to 484,703.73, 668,789.64 and 280,742.28

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Solution

The fourth proportional to 484,703.73, 668,789.64 and 280,742.28 is: 387,365.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,703.73 : 668,789.64 = 280,742.28 : x
  2. Step 2: Convert to fraction form
    484,703.73/668,789.64 = 280,742.28/x
  3. Step 3: Cross multiply
    484,703.73x = 668,789.64 × 280,742.28
  4. Step 4: Simplify right side
    484,703.73x = 187,757,528,373.98
  5. Step 5: Solve for x
    x = 187,757,528,373.98/484,703.73
  6. Step 6: Final answer
    x = 387,365.55

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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.