Home / 643,284.59-887,151.61-401,589.41

Finding the Fourth Proportional to 643,284.59, 887,151.61 and 401,589.41

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Solution

The fourth proportional to 643,284.59, 887,151.61 and 401,589.41 is: 553,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,284.59 : 887,151.61 = 401,589.41 : x
  2. Step 2: Convert to fraction form
    643,284.59/887,151.61 = 401,589.41/x
  3. Step 3: Cross multiply
    643,284.59x = 887,151.61 × 401,589.41
  4. Step 4: Simplify right side
    643,284.59x = 356,270,691,640.45
  5. Step 5: Solve for x
    x = 356,270,691,640.45/643,284.59
  6. Step 6: Final answer
    x = 553,830.60

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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.