Home / 745,100.70-1,028,210.38-422,791.57

Finding the Fourth Proportional to 745,100.70, 1,028,210.38 and 422,791.57

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Solution

The fourth proportional to 745,100.70, 1,028,210.38 and 422,791.57 is: 583,436.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,100.70 : 1,028,210.38 = 422,791.57 : x
  2. Step 2: Convert to fraction form
    745,100.70/1,028,210.38 = 422,791.57/x
  3. Step 3: Cross multiply
    745,100.70x = 1,028,210.38 × 422,791.57
  4. Step 4: Simplify right side
    745,100.70x = 434,718,680,850.50
  5. Step 5: Solve for x
    x = 434,718,680,850.50/745,100.70
  6. Step 6: Final answer
    x = 583,436.15

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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.