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Finding the Fourth Proportional to 479,495.93, 661,790.16 and 285,916.10

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Solution

The fourth proportional to 479,495.93, 661,790.16 and 285,916.10 is: 394,615.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,495.93 : 661,790.16 = 285,916.10 : x
  2. Step 2: Convert to fraction form
    479,495.93/661,790.16 = 285,916.10/x
  3. Step 3: Cross multiply
    479,495.93x = 661,790.16 × 285,916.10
  4. Step 4: Simplify right side
    479,495.93x = 189,216,458,256.63
  5. Step 5: Solve for x
    x = 189,216,458,256.63/479,495.93
  6. Step 6: Final answer
    x = 394,615.36

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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.