Home / 726,132.64-1,086,862.64-388,328.16

Finding the Fourth Proportional to 726,132.64, 1,086,862.64 and 388,328.16

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Solution

The fourth proportional to 726,132.64, 1,086,862.64 and 388,328.16 is: 581,242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,132.64 : 1,086,862.64 = 388,328.16 : x
  2. Step 2: Convert to fraction form
    726,132.64/1,086,862.64 = 388,328.16/x
  3. Step 3: Cross multiply
    726,132.64x = 1,086,862.64 × 388,328.16
  4. Step 4: Simplify right side
    726,132.64x = 422,059,369,163.94
  5. Step 5: Solve for x
    x = 422,059,369,163.94/726,132.64
  6. Step 6: Final answer
    x = 581,242.80

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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.