Home / 678,022.98-935,609.82-402,333.32

Finding the Fourth Proportional to 678,022.98, 935,609.82 and 402,333.32

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Solution

The fourth proportional to 678,022.98, 935,609.82 and 402,333.32 is: 555,183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,022.98 : 935,609.82 = 402,333.32 : x
  2. Step 2: Convert to fraction form
    678,022.98/935,609.82 = 402,333.32/x
  3. Step 3: Cross multiply
    678,022.98x = 935,609.82 × 402,333.32
  4. Step 4: Simplify right side
    678,022.98x = 376,427,000,427.15
  5. Step 5: Solve for x
    x = 376,427,000,427.15/678,022.98
  6. Step 6: Final answer
    x = 555,183.25

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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.