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Finding the Fourth Proportional to 657,275.61, 907,040.94 and 355,469.61

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Solution

The fourth proportional to 657,275.61, 907,040.94 and 355,469.61 is: 490,548.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,275.61 : 907,040.94 = 355,469.61 : x
  2. Step 2: Convert to fraction form
    657,275.61/907,040.94 = 355,469.61/x
  3. Step 3: Cross multiply
    657,275.61x = 907,040.94 × 355,469.61
  4. Step 4: Simplify right side
    657,275.61x = 322,425,482,883.28
  5. Step 5: Solve for x
    x = 322,425,482,883.28/657,275.61
  6. Step 6: Final answer
    x = 490,548.38

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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.