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Finding the Fourth Proportional to 479,670.99, 662,032.62 and 286,091.12

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Solution

The fourth proportional to 479,670.99, 662,032.62 and 286,091.12 is: 394,857.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,670.99 : 662,032.62 = 286,091.12 : x
  2. Step 2: Convert to fraction form
    479,670.99/662,032.62 = 286,091.12/x
  3. Step 3: Cross multiply
    479,670.99x = 662,032.62 × 286,091.12
  4. Step 4: Simplify right side
    479,670.99x = 189,401,650,422.17
  5. Step 5: Solve for x
    x = 189,401,650,422.17/479,670.99
  6. Step 6: Final answer
    x = 394,857.42

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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.