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Finding the Fourth Proportional to 657,169.04, 906,893 and 355,363.04

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Solution

The fourth proportional to 657,169.04, 906,893 and 355,363.04 is: 490,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,169.04 : 906,893 = 355,363.04 : x
  2. Step 2: Convert to fraction form
    657,169.04/906,893 = 355,363.04/x
  3. Step 3: Cross multiply
    657,169.04x = 906,893 × 355,363.04
  4. Step 4: Simplify right side
    657,169.04x = 322,276,253,434.72
  5. Step 5: Solve for x
    x = 322,276,253,434.72/657,169.04
  6. Step 6: Final answer
    x = 490,400.85

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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.