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Finding the Fourth Proportional to 640,233.32, 960,608.16 and 285,004.40

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Solution

The fourth proportional to 640,233.32, 960,608.16 and 285,004.40 is: 427,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,233.32 : 960,608.16 = 285,004.40 : x
  2. Step 2: Convert to fraction form
    640,233.32/960,608.16 = 285,004.40/x
  3. Step 3: Cross multiply
    640,233.32x = 960,608.16 × 285,004.40
  4. Step 4: Simplify right side
    640,233.32x = 273,777,552,275.90
  5. Step 5: Solve for x
    x = 273,777,552,275.90/640,233.32
  6. Step 6: Final answer
    x = 427,621.53

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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.