Home / 745,334.43-1,029,200.81-721,232.75

Finding the Fourth Proportional to 745,334.43, 1,029,200.81 and 721,232.75

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Solution

The fourth proportional to 745,334.43, 1,029,200.81 and 721,232.75 is: 995,919.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,334.43 : 1,029,200.81 = 721,232.75 : x
  2. Step 2: Convert to fraction form
    745,334.43/1,029,200.81 = 721,232.75/x
  3. Step 3: Cross multiply
    745,334.43x = 1,029,200.81 × 721,232.75
  4. Step 4: Simplify right side
    745,334.43x = 742,293,331,141.78
  5. Step 5: Solve for x
    x = 742,293,331,141.78/745,334.43
  6. Step 6: Final answer
    x = 995,919.82

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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.