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Finding the Fourth Proportional to 709,924.58, 979,697.97 and 387,637.46

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Solution

The fourth proportional to 709,924.58, 979,697.97 and 387,637.46 is: 534,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,924.58 : 979,697.97 = 387,637.46 : x
  2. Step 2: Convert to fraction form
    709,924.58/979,697.97 = 387,637.46/x
  3. Step 3: Cross multiply
    709,924.58x = 979,697.97 × 387,637.46
  4. Step 4: Simplify right side
    709,924.58x = 379,767,632,657.96
  5. Step 5: Solve for x
    x = 379,767,632,657.96/709,924.58
  6. Step 6: Final answer
    x = 534,940.81

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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.