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Finding the Fourth Proportional to 651,215.84, 898,705.56 and 379,239.88

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Solution

The fourth proportional to 651,215.84, 898,705.56 and 379,239.88 is: 523,367.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,215.84 : 898,705.56 = 379,239.88 : x
  2. Step 2: Convert to fraction form
    651,215.84/898,705.56 = 379,239.88/x
  3. Step 3: Cross multiply
    651,215.84x = 898,705.56 × 379,239.88
  4. Step 4: Simplify right side
    651,215.84x = 340,824,988,729.73
  5. Step 5: Solve for x
    x = 340,824,988,729.73/651,215.84
  6. Step 6: Final answer
    x = 523,367.17

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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.