Home / 877,399.20-1,315,078.20-404,132.40

Finding the Fourth Proportional to 877,399.20, 1,315,078.20 and 404,132.40

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Solution

The fourth proportional to 877,399.20, 1,315,078.20 and 404,132.40 is: 605,728.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,399.20 : 1,315,078.20 = 404,132.40 : x
  2. Step 2: Convert to fraction form
    877,399.20/1,315,078.20 = 404,132.40/x
  3. Step 3: Cross multiply
    877,399.20x = 1,315,078.20 × 404,132.40
  4. Step 4: Simplify right side
    877,399.20x = 531,465,709,153.68
  5. Step 5: Solve for x
    x = 531,465,709,153.68/877,399.20
  6. Step 6: Final answer
    x = 605,728.51

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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.