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Finding the Fourth Proportional to 640,734.88, 960,507.60 and 303,933.52

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Solution

The fourth proportional to 640,734.88, 960,507.60 and 303,933.52 is: 455,618.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,734.88 : 960,507.60 = 303,933.52 : x
  2. Step 2: Convert to fraction form
    640,734.88/960,507.60 = 303,933.52/x
  3. Step 3: Cross multiply
    640,734.88x = 960,507.60 × 303,933.52
  4. Step 4: Simplify right side
    640,734.88x = 291,930,455,854.75
  5. Step 5: Solve for x
    x = 291,930,455,854.75/640,734.88
  6. Step 6: Final answer
    x = 455,618.17

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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.