Home / 990,904.70-1,486,065.44-280,994.78

Finding the Fourth Proportional to 990,904.70, 1,486,065.44 and 280,994.78

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Solution

The fourth proportional to 990,904.70, 1,486,065.44 and 280,994.78 is: 421,409.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,904.70 : 1,486,065.44 = 280,994.78 : x
  2. Step 2: Convert to fraction form
    990,904.70/1,486,065.44 = 280,994.78/x
  3. Step 3: Cross multiply
    990,904.70x = 1,486,065.44 × 280,994.78
  4. Step 4: Simplify right side
    990,904.70x = 417,576,631,378.40
  5. Step 5: Solve for x
    x = 417,576,631,378.40/990,904.70
  6. Step 6: Final answer
    x = 421,409.48

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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.