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Finding the Fourth Proportional to 654,761.76, 903,580.56 and 386,489.76

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Solution

The fourth proportional to 654,761.76, 903,580.56 and 386,489.76 is: 533,361.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,761.76 : 903,580.56 = 386,489.76 : x
  2. Step 2: Convert to fraction form
    654,761.76/903,580.56 = 386,489.76/x
  3. Step 3: Cross multiply
    654,761.76x = 903,580.56 × 386,489.76
  4. Step 4: Simplify right side
    654,761.76x = 349,224,633,775.07
  5. Step 5: Solve for x
    x = 349,224,633,775.07/654,761.76
  6. Step 6: Final answer
    x = 533,361.38

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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.