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Finding the Fourth Proportional to 656,899.90, 906,522.11 and 355,093.90

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Solution

The fourth proportional to 656,899.90, 906,522.11 and 355,093.90 is: 490,029.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,899.90 : 906,522.11 = 355,093.90 : x
  2. Step 2: Convert to fraction form
    656,899.90/906,522.11 = 355,093.90/x
  3. Step 3: Cross multiply
    656,899.90x = 906,522.11 × 355,093.90
  4. Step 4: Simplify right side
    656,899.90x = 321,900,471,476.13
  5. Step 5: Solve for x
    x = 321,900,471,476.13/656,899.90
  6. Step 6: Final answer
    x = 490,029.72

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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.