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Finding the Fourth Proportional to 380,718.43, 570,675.78 and 127,759.07

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Solution

The fourth proportional to 380,718.43, 570,675.78 and 127,759.07 is: 191,503.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,718.43 : 570,675.78 = 127,759.07 : x
  2. Step 2: Convert to fraction form
    380,718.43/570,675.78 = 127,759.07/x
  3. Step 3: Cross multiply
    380,718.43x = 570,675.78 × 127,759.07
  4. Step 4: Simplify right side
    380,718.43x = 72,909,008,351.01
  5. Step 5: Solve for x
    x = 72,909,008,351.01/380,718.43
  6. Step 6: Final answer
    x = 191,503.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.