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Finding the Fourth Proportional to 657,664.92, 907,580.40 and 355,858.92

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Solution

The fourth proportional to 657,664.92, 907,580.40 and 355,858.92 is: 491,086.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,664.92 : 907,580.40 = 355,858.92 : x
  2. Step 2: Convert to fraction form
    657,664.92/907,580.40 = 355,858.92/x
  3. Step 3: Cross multiply
    657,664.92x = 907,580.40 × 355,858.92
  4. Step 4: Simplify right side
    657,664.92x = 322,970,579,622.70
  5. Step 5: Solve for x
    x = 322,970,579,622.70/657,664.92
  6. Step 6: Final answer
    x = 491,086.83

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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.