Home / 990,904.20-1,486,064.70-280,994.28

Finding the Fourth Proportional to 990,904.20, 1,486,064.70 and 280,994.28

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Solution

The fourth proportional to 990,904.20, 1,486,064.70 and 280,994.28 is: 421,408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,904.20 : 1,486,064.70 = 280,994.28 : x
  2. Step 2: Convert to fraction form
    990,904.20/1,486,064.70 = 280,994.28/x
  3. Step 3: Cross multiply
    990,904.20x = 1,486,064.70 × 280,994.28
  4. Step 4: Simplify right side
    990,904.20x = 417,575,680,409.92
  5. Step 5: Solve for x
    x = 417,575,680,409.92/990,904.20
  6. Step 6: Final answer
    x = 421,408.73

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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.