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Finding the Fourth Proportional to 455,029.97, 628,168.70 and 283,003.39

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Solution

The fourth proportional to 455,029.97, 628,168.70 and 283,003.39 is: 390,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,029.97 : 628,168.70 = 283,003.39 : x
  2. Step 2: Convert to fraction form
    455,029.97/628,168.70 = 283,003.39/x
  3. Step 3: Cross multiply
    455,029.97x = 628,168.70 × 283,003.39
  4. Step 4: Simplify right side
    455,029.97x = 177,773,868,606.45
  5. Step 5: Solve for x
    x = 177,773,868,606.45/455,029.97
  6. Step 6: Final answer
    x = 390,686.07

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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.