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Finding the Fourth Proportional to 486,451.55, 671,252.21 and 282,462.71

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Solution

The fourth proportional to 486,451.55, 671,252.21 and 282,462.71 is: 389,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,451.55 : 671,252.21 = 282,462.71 : x
  2. Step 2: Convert to fraction form
    486,451.55/671,252.21 = 282,462.71/x
  3. Step 3: Cross multiply
    486,451.55x = 671,252.21 × 282,462.71
  4. Step 4: Simplify right side
    486,451.55x = 189,603,713,561.52
  5. Step 5: Solve for x
    x = 189,603,713,561.52/486,451.55
  6. Step 6: Final answer
    x = 389,768.96

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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.