Home / 640,289.49-960,433.83-191,325.33

Finding the Fourth Proportional to 640,289.49, 960,433.83 and 191,325.33

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Solution

The fourth proportional to 640,289.49, 960,433.83 and 191,325.33 is: 286,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,289.49 : 960,433.83 = 191,325.33 : x
  2. Step 2: Convert to fraction form
    640,289.49/960,433.83 = 191,325.33/x
  3. Step 3: Cross multiply
    640,289.49x = 960,433.83 × 191,325.33
  4. Step 4: Simplify right side
    640,289.49x = 183,755,319,467.91
  5. Step 5: Solve for x
    x = 183,755,319,467.91/640,289.49
  6. Step 6: Final answer
    x = 286,987.87

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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.