Home / 678,034.30-935,625.43-402,344.63

Finding the Fourth Proportional to 678,034.30, 935,625.43 and 402,344.63

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Solution

The fourth proportional to 678,034.30, 935,625.43 and 402,344.63 is: 555,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,034.30 : 935,625.43 = 402,344.63 : x
  2. Step 2: Convert to fraction form
    678,034.30/935,625.43 = 402,344.63/x
  3. Step 3: Cross multiply
    678,034.30x = 935,625.43 × 402,344.63
  4. Step 4: Simplify right side
    678,034.30x = 376,443,865,440.22
  5. Step 5: Solve for x
    x = 376,443,865,440.22/678,034.30
  6. Step 6: Final answer
    x = 555,198.86

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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.