Home / 641,533.74-961,786.81-321,521.34

Finding the Fourth Proportional to 641,533.74, 961,786.81 and 321,521.34

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Solution

The fourth proportional to 641,533.74, 961,786.81 and 321,521.34 is: 482,024.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,533.74 : 961,786.81 = 321,521.34 : x
  2. Step 2: Convert to fraction form
    641,533.74/961,786.81 = 321,521.34/x
  3. Step 3: Cross multiply
    641,533.74x = 961,786.81 × 321,521.34
  4. Step 4: Simplify right side
    641,533.74x = 309,234,978,934.77
  5. Step 5: Solve for x
    x = 309,234,978,934.77/641,533.74
  6. Step 6: Final answer
    x = 482,024.50

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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.