Home / 663,841.05-915,943.19-377,338.58

Finding the Fourth Proportional to 663,841.05, 915,943.19 and 377,338.58

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Solution

The fourth proportional to 663,841.05, 915,943.19 and 377,338.58 is: 520,637.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,841.05 : 915,943.19 = 377,338.58 : x
  2. Step 2: Convert to fraction form
    663,841.05/915,943.19 = 377,338.58/x
  3. Step 3: Cross multiply
    663,841.05x = 915,943.19 × 377,338.58
  4. Step 4: Simplify right side
    663,841.05x = 345,620,703,078.44
  5. Step 5: Solve for x
    x = 345,620,703,078.44/663,841.05
  6. Step 6: Final answer
    x = 520,637.74

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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.