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Finding the Fourth Proportional to 550,759.12, 760,047.96 and 309,008.32

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Solution

The fourth proportional to 550,759.12, 760,047.96 and 309,008.32 is: 426,431.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,759.12 : 760,047.96 = 309,008.32 : x
  2. Step 2: Convert to fraction form
    550,759.12/760,047.96 = 309,008.32/x
  3. Step 3: Cross multiply
    550,759.12x = 760,047.96 × 309,008.32
  4. Step 4: Simplify right side
    550,759.12x = 234,861,143,239.03
  5. Step 5: Solve for x
    x = 234,861,143,239.03/550,759.12
  6. Step 6: Final answer
    x = 426,431.69

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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.