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Finding the Fourth Proportional to 657,076.13, 906,765.06 and 355,270.13

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Solution

The fourth proportional to 657,076.13, 906,765.06 and 355,270.13 is: 490,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,076.13 : 906,765.06 = 355,270.13 : x
  2. Step 2: Convert to fraction form
    657,076.13/906,765.06 = 355,270.13/x
  3. Step 3: Cross multiply
    657,076.13x = 906,765.06 × 355,270.13
  4. Step 4: Simplify right side
    657,076.13x = 322,146,536,211.83
  5. Step 5: Solve for x
    x = 322,146,536,211.83/657,076.13
  6. Step 6: Final answer
    x = 490,272.78

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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.