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Finding the Fourth Proportional to 640,877.70, 960,004.35 and 325,512.30

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Solution

The fourth proportional to 640,877.70, 960,004.35 and 325,512.30 is: 487,601.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,877.70 : 960,004.35 = 325,512.30 : x
  2. Step 2: Convert to fraction form
    640,877.70/960,004.35 = 325,512.30/x
  3. Step 3: Cross multiply
    640,877.70x = 960,004.35 × 325,512.30
  4. Step 4: Simplify right side
    640,877.70x = 312,493,223,978.51
  5. Step 5: Solve for x
    x = 312,493,223,978.51/640,877.70
  6. Step 6: Final answer
    x = 487,601.96

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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.