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Finding the Fourth Proportional to 500,719.31, 751,079.51 and 126,742.31

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Solution

The fourth proportional to 500,719.31, 751,079.51 and 126,742.31 is: 190,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,719.31 : 751,079.51 = 126,742.31 : x
  2. Step 2: Convert to fraction form
    500,719.31/751,079.51 = 126,742.31/x
  3. Step 3: Cross multiply
    500,719.31x = 751,079.51 × 126,742.31
  4. Step 4: Simplify right side
    500,719.31x = 95,193,552,091.07
  5. Step 5: Solve for x
    x = 95,193,552,091.07/500,719.31
  6. Step 6: Final answer
    x = 190,113.60

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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.