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Finding the Fourth Proportional to 701,544.96, 968,130.56 and 399,738.88

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Solution

The fourth proportional to 701,544.96, 968,130.56 and 399,738.88 is: 551,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,544.96 : 968,130.56 = 399,738.88 : x
  2. Step 2: Convert to fraction form
    701,544.96/968,130.56 = 399,738.88/x
  3. Step 3: Cross multiply
    701,544.96x = 968,130.56 × 399,738.88
  4. Step 4: Simplify right side
    701,544.96x = 386,999,425,748.17
  5. Step 5: Solve for x
    x = 386,999,425,748.17/701,544.96
  6. Step 6: Final answer
    x = 551,638.81

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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.