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Finding the Fourth Proportional to 561,969.76, 775,502.52 and 307,315.48

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Solution

The fourth proportional to 561,969.76, 775,502.52 and 307,315.48 is: 424,086.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,969.76 : 775,502.52 = 307,315.48 : x
  2. Step 2: Convert to fraction form
    561,969.76/775,502.52 = 307,315.48/x
  3. Step 3: Cross multiply
    561,969.76x = 775,502.52 × 307,315.48
  4. Step 4: Simplify right side
    561,969.76x = 238,323,929,175.01
  5. Step 5: Solve for x
    x = 238,323,929,175.01/561,969.76
  6. Step 6: Final answer
    x = 424,086.75

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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.