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Finding the Fourth Proportional to 487,504.02, 672,735.60 and 283,560.78

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Solution

The fourth proportional to 487,504.02, 672,735.60 and 283,560.78 is: 391,302.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,504.02 : 672,735.60 = 283,560.78 : x
  2. Step 2: Convert to fraction form
    487,504.02/672,735.60 = 283,560.78/x
  3. Step 3: Cross multiply
    487,504.02x = 672,735.60 × 283,560.78
  4. Step 4: Simplify right side
    487,504.02x = 190,761,431,469.77
  5. Step 5: Solve for x
    x = 190,761,431,469.77/487,504.02
  6. Step 6: Final answer
    x = 391,302.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.