Home / 726,199.12-1,086,969.53-388,395.10

Finding the Fourth Proportional to 726,199.12, 1,086,969.53 and 388,395.10

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Solution

The fourth proportional to 726,199.12, 1,086,969.53 and 388,395.10 is: 581,346.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,199.12 : 1,086,969.53 = 388,395.10 : x
  2. Step 2: Convert to fraction form
    726,199.12/1,086,969.53 = 388,395.10/x
  3. Step 3: Cross multiply
    726,199.12x = 1,086,969.53 × 388,395.10
  4. Step 4: Simplify right side
    726,199.12x = 422,173,639,446.28
  5. Step 5: Solve for x
    x = 422,173,639,446.28/726,199.12
  6. Step 6: Final answer
    x = 581,346.94

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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.