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Finding the Fourth Proportional to 657,796.10, 907,758.60 and 355,990.10

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Solution

The fourth proportional to 657,796.10, 907,758.60 and 355,990.10 is: 491,266.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,796.10 : 907,758.60 = 355,990.10 : x
  2. Step 2: Convert to fraction form
    657,796.10/907,758.60 = 355,990.10/x
  3. Step 3: Cross multiply
    657,796.10x = 907,758.60 × 355,990.10
  4. Step 4: Simplify right side
    657,796.10x = 323,153,074,789.86
  5. Step 5: Solve for x
    x = 323,153,074,789.86/657,796.10
  6. Step 6: Final answer
    x = 491,266.33

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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.