Home / 691,977.39-954,907.14-405,688.15

Finding the Fourth Proportional to 691,977.39, 954,907.14 and 405,688.15

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Solution

The fourth proportional to 691,977.39, 954,907.14 and 405,688.15 is: 559,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,977.39 : 954,907.14 = 405,688.15 : x
  2. Step 2: Convert to fraction form
    691,977.39/954,907.14 = 405,688.15/x
  3. Step 3: Cross multiply
    691,977.39x = 954,907.14 × 405,688.15
  4. Step 4: Simplify right side
    691,977.39x = 387,394,511,048.39
  5. Step 5: Solve for x
    x = 387,394,511,048.39/691,977.39
  6. Step 6: Final answer
    x = 559,836.95

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1.5x scale

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.