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Finding the Fourth Proportional to 497,483.85, 686,494.87 and 279,726.09

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Solution

The fourth proportional to 497,483.85, 686,494.87 and 279,726.09 is: 386,003.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,483.85 : 686,494.87 = 279,726.09 : x
  2. Step 2: Convert to fraction form
    497,483.85/686,494.87 = 279,726.09/x
  3. Step 3: Cross multiply
    497,483.85x = 686,494.87 × 279,726.09
  4. Step 4: Simplify right side
    497,483.85x = 192,030,525,790.16
  5. Step 5: Solve for x
    x = 192,030,525,790.16/497,483.85
  6. Step 6: Final answer
    x = 386,003.54

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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.