Home / 669,018.50-923,126.43-378,628.70

Finding the Fourth Proportional to 669,018.50, 923,126.43 and 378,628.70

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Solution

The fourth proportional to 669,018.50, 923,126.43 and 378,628.70 is: 522,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,018.50 : 923,126.43 = 378,628.70 : x
  2. Step 2: Convert to fraction form
    669,018.50/923,126.43 = 378,628.70/x
  3. Step 3: Cross multiply
    669,018.50x = 923,126.43 × 378,628.70
  4. Step 4: Simplify right side
    669,018.50x = 349,522,160,126.54
  5. Step 5: Solve for x
    x = 349,522,160,126.54/669,018.50
  6. Step 6: Final answer
    x = 522,440.20

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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.