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Finding the Fourth Proportional to 486,868.97, 671,764.04 and 282,798.63

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Solution

The fourth proportional to 486,868.97, 671,764.04 and 282,798.63 is: 390,195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,868.97 : 671,764.04 = 282,798.63 : x
  2. Step 2: Convert to fraction form
    486,868.97/671,764.04 = 282,798.63/x
  3. Step 3: Cross multiply
    486,868.97x = 671,764.04 × 282,798.63
  4. Step 4: Simplify right side
    486,868.97x = 189,973,951,300.39
  5. Step 5: Solve for x
    x = 189,973,951,300.39/486,868.97
  6. Step 6: Final answer
    x = 390,195.23

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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.