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Finding the Fourth Proportional to 432,074.70, 648,112.05 and 407,580.30

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Solution

The fourth proportional to 432,074.70, 648,112.05 and 407,580.30 is: 611,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,074.70 : 648,112.05 = 407,580.30 : x
  2. Step 2: Convert to fraction form
    432,074.70/648,112.05 = 407,580.30/x
  3. Step 3: Cross multiply
    432,074.70x = 648,112.05 × 407,580.30
  4. Step 4: Simplify right side
    432,074.70x = 264,157,703,772.62
  5. Step 5: Solve for x
    x = 264,157,703,772.62/432,074.70
  6. Step 6: Final answer
    x = 611,370.45

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Similar ratio
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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.