Home / 628,118.37-941,820.63-428,680.37

Finding the Fourth Proportional to 628,118.37, 941,820.63 and 428,680.37

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Solution

The fourth proportional to 628,118.37, 941,820.63 and 428,680.37 is: 642,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,118.37 : 941,820.63 = 428,680.37 : x
  2. Step 2: Convert to fraction form
    628,118.37/941,820.63 = 428,680.37/x
  3. Step 3: Cross multiply
    628,118.37x = 941,820.63 × 428,680.37
  4. Step 4: Simplify right side
    628,118.37x = 403,740,011,432.93
  5. Step 5: Solve for x
    x = 403,740,011,432.93/628,118.37
  6. Step 6: Final answer
    x = 642,776.95

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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.