Home / 725,857.89-1,001,657.71-399,168.15

Finding the Fourth Proportional to 725,857.89, 1,001,657.71 and 399,168.15

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Solution

The fourth proportional to 725,857.89, 1,001,657.71 and 399,168.15 is: 550,837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,857.89 : 1,001,657.71 = 399,168.15 : x
  2. Step 2: Convert to fraction form
    725,857.89/1,001,657.71 = 399,168.15/x
  3. Step 3: Cross multiply
    725,857.89x = 1,001,657.71 × 399,168.15
  4. Step 4: Simplify right side
    725,857.89x = 399,829,848,029.81
  5. Step 5: Solve for x
    x = 399,829,848,029.81/725,857.89
  6. Step 6: Final answer
    x = 550,837.65

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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.