Home / 743,117.09-1,025,564.83-420,884.51

Finding the Fourth Proportional to 743,117.09, 1,025,564.83 and 420,884.51

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Solution

The fourth proportional to 743,117.09, 1,025,564.83 and 420,884.51 is: 580,856.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,117.09 : 1,025,564.83 = 420,884.51 : x
  2. Step 2: Convert to fraction form
    743,117.09/1,025,564.83 = 420,884.51/x
  3. Step 3: Cross multiply
    743,117.09x = 1,025,564.83 × 420,884.51
  4. Step 4: Simplify right side
    743,117.09x = 431,644,350,947.78
  5. Step 5: Solve for x
    x = 431,644,350,947.78/743,117.09
  6. Step 6: Final answer
    x = 580,856.44

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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.