Home / 669,031.35-923,262.87-378,637.57

Finding the Fourth Proportional to 669,031.35, 923,262.87 and 378,637.57

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Solution

The fourth proportional to 669,031.35, 923,262.87 and 378,637.57 is: 522,519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,031.35 : 923,262.87 = 378,637.57 : x
  2. Step 2: Convert to fraction form
    669,031.35/923,262.87 = 378,637.57/x
  3. Step 3: Cross multiply
    669,031.35x = 923,262.87 × 378,637.57
  4. Step 4: Simplify right side
    669,031.35x = 349,582,009,568.03
  5. Step 5: Solve for x
    x = 349,582,009,568.03/669,031.35
  6. Step 6: Final answer
    x = 522,519.62

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1.5x scale

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.