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Finding the Fourth Proportional to 657,286.62, 907,055.54 and 355,480.62

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Solution

The fourth proportional to 657,286.62, 907,055.54 and 355,480.62 is: 490,563.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,286.62 : 907,055.54 = 355,480.62 : x
  2. Step 2: Convert to fraction form
    657,286.62/907,055.54 = 355,480.62/x
  3. Step 3: Cross multiply
    657,286.62x = 907,055.54 × 355,480.62
  4. Step 4: Simplify right side
    657,286.62x = 322,440,665,733.64
  5. Step 5: Solve for x
    x = 322,440,665,733.64/657,286.62
  6. Step 6: Final answer
    x = 490,563.26

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Double scale
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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.