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Finding the Fourth Proportional to 640,638.72, 960,957.95 and 587,180.41

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Solution

The fourth proportional to 640,638.72, 960,957.95 and 587,180.41 is: 880,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,638.72 : 960,957.95 = 587,180.41 : x
  2. Step 2: Convert to fraction form
    640,638.72/960,957.95 = 587,180.41/x
  3. Step 3: Cross multiply
    640,638.72x = 960,957.95 × 587,180.41
  4. Step 4: Simplify right side
    640,638.72x = 564,255,677,735.46
  5. Step 5: Solve for x
    x = 564,255,677,735.46/640,638.72
  6. Step 6: Final answer
    x = 880,770.49

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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.