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Finding the Fourth Proportional to 432,443.80, 648,665.70 and 283,144.60

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Solution

The fourth proportional to 432,443.80, 648,665.70 and 283,144.60 is: 424,716.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,443.80 : 648,665.70 = 283,144.60 : x
  2. Step 2: Convert to fraction form
    432,443.80/648,665.70 = 283,144.60/x
  3. Step 3: Cross multiply
    432,443.80x = 648,665.70 × 283,144.60
  4. Step 4: Simplify right side
    432,443.80x = 183,666,190,160.22
  5. Step 5: Solve for x
    x = 183,666,190,160.22/432,443.80
  6. Step 6: Final answer
    x = 424,716.90

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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.