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Finding the Fourth Proportional to 555,709.90, 766,879.61 and 301,061.09

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Solution

The fourth proportional to 555,709.90, 766,879.61 and 301,061.09 is: 415,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,709.90 : 766,879.61 = 301,061.09 : x
  2. Step 2: Convert to fraction form
    555,709.90/766,879.61 = 301,061.09/x
  3. Step 3: Cross multiply
    555,709.90x = 766,879.61 × 301,061.09
  4. Step 4: Simplify right side
    555,709.90x = 230,877,611,285.38
  5. Step 5: Solve for x
    x = 230,877,611,285.38/555,709.90
  6. Step 6: Final answer
    x = 415,464.28

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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.