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Finding the Fourth Proportional to 657,161.55, 906,883.02 and 355,355.55

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Solution

The fourth proportional to 657,161.55, 906,883.02 and 355,355.55 is: 490,390.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,161.55 : 906,883.02 = 355,355.55 : x
  2. Step 2: Convert to fraction form
    657,161.55/906,883.02 = 355,355.55/x
  3. Step 3: Cross multiply
    657,161.55x = 906,883.02 × 355,355.55
  4. Step 4: Simplify right side
    657,161.55x = 322,265,914,357.76
  5. Step 5: Solve for x
    x = 322,265,914,357.76/657,161.55
  6. Step 6: Final answer
    x = 490,390.70

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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.