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Finding the Fourth Proportional to 550,914.30, 760,165.74 and 309,207.06

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Solution

The fourth proportional to 550,914.30, 760,165.74 and 309,207.06 is: 426,651.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,914.30 : 760,165.74 = 309,207.06 : x
  2. Step 2: Convert to fraction form
    550,914.30/760,165.74 = 309,207.06/x
  3. Step 3: Cross multiply
    550,914.30x = 760,165.74 × 309,207.06
  4. Step 4: Simplify right side
    550,914.30x = 235,048,613,578.12
  5. Step 5: Solve for x
    x = 235,048,613,578.12/550,914.30
  6. Step 6: Final answer
    x = 426,651.87

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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.