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Finding the Fourth Proportional to 640,232.32, 960,606.66 and 285,003.40

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Solution

The fourth proportional to 640,232.32, 960,606.66 and 285,003.40 is: 427,620.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,232.32 : 960,606.66 = 285,003.40 : x
  2. Step 2: Convert to fraction form
    640,232.32/960,606.66 = 285,003.40/x
  3. Step 3: Cross multiply
    640,232.32x = 960,606.66 × 285,003.40
  4. Step 4: Simplify right side
    640,232.32x = 273,776,164,162.64
  5. Step 5: Solve for x
    x = 273,776,164,162.64/640,232.32
  6. Step 6: Final answer
    x = 427,620.03

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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.