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Finding the Fourth Proportional to 657,326.38, 907,110.47 and 355,520.38

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Solution

The fourth proportional to 657,326.38, 907,110.47 and 355,520.38 is: 490,618.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,326.38 : 907,110.47 = 355,520.38 : x
  2. Step 2: Convert to fraction form
    657,326.38/907,110.47 = 355,520.38/x
  3. Step 3: Cross multiply
    657,326.38x = 907,110.47 × 355,520.38
  4. Step 4: Simplify right side
    657,326.38x = 322,496,258,996.38
  5. Step 5: Solve for x
    x = 322,496,258,996.38/657,326.38
  6. Step 6: Final answer
    x = 490,618.16

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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.