Home / 640,063.05-960,228.23-213,581.85

Finding the Fourth Proportional to 640,063.05, 960,228.23 and 213,581.85

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Solution

The fourth proportional to 640,063.05, 960,228.23 and 213,581.85 is: 320,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,063.05 : 960,228.23 = 213,581.85 : x
  2. Step 2: Convert to fraction form
    640,063.05/960,228.23 = 213,581.85/x
  3. Step 3: Cross multiply
    640,063.05x = 960,228.23 × 213,581.85
  4. Step 4: Simplify right side
    640,063.05x = 205,087,320,717.72
  5. Step 5: Solve for x
    x = 205,087,320,717.72/640,063.05
  6. Step 6: Final answer
    x = 320,417.37

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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.