Home / 661,715.11-992,137.09-436,388.50

Finding the Fourth Proportional to 661,715.11, 992,137.09 and 436,388.50

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Solution

The fourth proportional to 661,715.11, 992,137.09 and 436,388.50 is: 654,295.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,715.11 : 992,137.09 = 436,388.50 : x
  2. Step 2: Convert to fraction form
    661,715.11/992,137.09 = 436,388.50/x
  3. Step 3: Cross multiply
    661,715.11x = 992,137.09 × 436,388.50
  4. Step 4: Simplify right side
    661,715.11x = 432,957,216,499.47
  5. Step 5: Solve for x
    x = 432,957,216,499.47/661,715.11
  6. Step 6: Final answer
    x = 654,295.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.