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Finding the Fourth Proportional to 641,580.95, 961,934.01 and 325,428.23

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Solution

The fourth proportional to 641,580.95, 961,934.01 and 325,428.23 is: 487,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,580.95 : 961,934.01 = 325,428.23 : x
  2. Step 2: Convert to fraction form
    641,580.95/961,934.01 = 325,428.23/x
  3. Step 3: Cross multiply
    641,580.95x = 961,934.01 × 325,428.23
  4. Step 4: Simplify right side
    641,580.95x = 313,040,477,441.43
  5. Step 5: Solve for x
    x = 313,040,477,441.43/641,580.95
  6. Step 6: Final answer
    x = 487,920.47

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1.5x scale

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.