Home / 990,935.60-1,486,403.40-280,986.80

Finding the Fourth Proportional to 990,935.60, 1,486,403.40 and 280,986.80

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Solution

The fourth proportional to 990,935.60, 1,486,403.40 and 280,986.80 is: 421,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,935.60 : 1,486,403.40 = 280,986.80 : x
  2. Step 2: Convert to fraction form
    990,935.60/1,486,403.40 = 280,986.80/x
  3. Step 3: Cross multiply
    990,935.60x = 1,486,403.40 × 280,986.80
  4. Step 4: Simplify right side
    990,935.60x = 417,659,734,875.12
  5. Step 5: Solve for x
    x = 417,659,734,875.12/990,935.60
  6. Step 6: Final answer
    x = 421,480.20

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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.