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Finding the Fourth Proportional to 657,053.69, 906,734.06 and 355,247.69

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Solution

The fourth proportional to 657,053.69, 906,734.06 and 355,247.69 is: 490,241.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,053.69 : 906,734.06 = 355,247.69 : x
  2. Step 2: Convert to fraction form
    657,053.69/906,734.06 = 355,247.69/x
  3. Step 3: Cross multiply
    657,053.69x = 906,734.06 × 355,247.69
  4. Step 4: Simplify right side
    657,053.69x = 322,115,173,949.41
  5. Step 5: Solve for x
    x = 322,115,173,949.41/657,053.69
  6. Step 6: Final answer
    x = 490,241.79

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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.