Home / 640,434.12-960,616.53-324,882.84

Finding the Fourth Proportional to 640,434.12, 960,616.53 and 324,882.84

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Solution

The fourth proportional to 640,434.12, 960,616.53 and 324,882.84 is: 487,306.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,434.12 : 960,616.53 = 324,882.84 : x
  2. Step 2: Convert to fraction form
    640,434.12/960,616.53 = 324,882.84/x
  3. Step 3: Cross multiply
    640,434.12x = 960,616.53 × 324,882.84
  4. Step 4: Simplify right side
    640,434.12x = 312,087,826,417.35
  5. Step 5: Solve for x
    x = 312,087,826,417.35/640,434.12
  6. Step 6: Final answer
    x = 487,306.68

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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.