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Finding the Fourth Proportional to 640,113.72, 960,773.22 and 324,796.92

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Solution

The fourth proportional to 640,113.72, 960,773.22 and 324,796.92 is: 487,501.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,113.72 : 960,773.22 = 324,796.92 : x
  2. Step 2: Convert to fraction form
    640,113.72/960,773.22 = 324,796.92/x
  3. Step 3: Cross multiply
    640,113.72x = 960,773.22 × 324,796.92
  4. Step 4: Simplify right side
    640,113.72x = 312,056,182,674.48
  5. Step 5: Solve for x
    x = 312,056,182,674.48/640,113.72
  6. Step 6: Final answer
    x = 487,501.16

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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.