Home / 709,933.54-979,748.13-387,673.60

Finding the Fourth Proportional to 709,933.54, 979,748.13 and 387,673.60

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Solution

The fourth proportional to 709,933.54, 979,748.13 and 387,673.60 is: 535,011.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,933.54 : 979,748.13 = 387,673.60 : x
  2. Step 2: Convert to fraction form
    709,933.54/979,748.13 = 387,673.60/x
  3. Step 3: Cross multiply
    709,933.54x = 979,748.13 × 387,673.60
  4. Step 4: Simplify right side
    709,933.54x = 379,822,484,650.37
  5. Step 5: Solve for x
    x = 379,822,484,650.37/709,933.54
  6. Step 6: Final answer
    x = 535,011.33

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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.