Home / 628,112.24-941,811.45-428,674.24

Finding the Fourth Proportional to 628,112.24, 941,811.45 and 428,674.24

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Solution

The fourth proportional to 628,112.24, 941,811.45 and 428,674.24 is: 642,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,112.24 : 941,811.45 = 428,674.24 : x
  2. Step 2: Convert to fraction form
    628,112.24/941,811.45 = 428,674.24/x
  3. Step 3: Cross multiply
    628,112.24x = 941,811.45 × 428,674.24
  4. Step 4: Simplify right side
    628,112.24x = 403,730,307,552.05
  5. Step 5: Solve for x
    x = 403,730,307,552.05/628,112.24
  6. Step 6: Final answer
    x = 642,767.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.