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Finding the Fourth Proportional to 550,975.80, 760,288.25 and 309,284.96

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Solution

The fourth proportional to 550,975.80, 760,288.25 and 309,284.96 is: 426,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,975.80 : 760,288.25 = 309,284.96 : x
  2. Step 2: Convert to fraction form
    550,975.80/760,288.25 = 309,284.96/x
  3. Step 3: Cross multiply
    550,975.80x = 760,288.25 × 309,284.96
  4. Step 4: Simplify right side
    550,975.80x = 235,145,720,812.57
  5. Step 5: Solve for x
    x = 235,145,720,812.57/550,975.80
  6. Step 6: Final answer
    x = 426,780.49

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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.