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Finding the Fourth Proportional to 486,337.97, 671,143.82 and 282,439.01

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Solution

The fourth proportional to 486,337.97, 671,143.82 and 282,439.01 is: 389,764.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,337.97 : 671,143.82 = 282,439.01 : x
  2. Step 2: Convert to fraction form
    486,337.97/671,143.82 = 282,439.01/x
  3. Step 3: Cross multiply
    486,337.97x = 671,143.82 × 282,439.01
  4. Step 4: Simplify right side
    486,337.97x = 189,557,191,320.50
  5. Step 5: Solve for x
    x = 189,557,191,320.50/486,337.97
  6. Step 6: Final answer
    x = 389,764.33

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1.5x scale

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.