Home / 628,156.08-941,876.10-428,717.88

Finding the Fourth Proportional to 628,156.08, 941,876.10 and 428,717.88

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Solution

The fourth proportional to 628,156.08, 941,876.10 and 428,717.88 is: 642,832.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,156.08 : 941,876.10 = 428,717.88 : x
  2. Step 2: Convert to fraction form
    628,156.08/941,876.10 = 428,717.88/x
  3. Step 3: Cross multiply
    628,156.08x = 941,876.10 × 428,717.88
  4. Step 4: Simplify right side
    628,156.08x = 403,799,124,814.67
  5. Step 5: Solve for x
    x = 403,799,124,814.67/628,156.08
  6. Step 6: Final answer
    x = 642,832.47

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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.