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Finding the Fourth Proportional to 657,578.25, 907,457.99 and 355,772.25

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Solution

The fourth proportional to 657,578.25, 907,457.99 and 355,772.25 is: 490,965.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,578.25 : 907,457.99 = 355,772.25 : x
  2. Step 2: Convert to fraction form
    657,578.25/907,457.99 = 355,772.25/x
  3. Step 3: Cross multiply
    657,578.25x = 907,457.99 × 355,772.25
  4. Step 4: Simplify right side
    657,578.25x = 322,848,369,103.92
  5. Step 5: Solve for x
    x = 322,848,369,103.92/657,578.25
  6. Step 6: Final answer
    x = 490,965.71

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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.