Home / 743,119.81-1,025,568.58-420,887.23

Finding the Fourth Proportional to 743,119.81, 1,025,568.58 and 420,887.23

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Solution

The fourth proportional to 743,119.81, 1,025,568.58 and 420,887.23 is: 580,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,119.81 : 1,025,568.58 = 420,887.23 : x
  2. Step 2: Convert to fraction form
    743,119.81/1,025,568.58 = 420,887.23/x
  3. Step 3: Cross multiply
    743,119.81x = 1,025,568.58 × 420,887.23
  4. Step 4: Simplify right side
    743,119.81x = 431,648,718,811.23
  5. Step 5: Solve for x
    x = 431,648,718,811.23/743,119.81
  6. Step 6: Final answer
    x = 580,860.20

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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.