Home / 990,941.76-1,486,469.16-280,914

Finding the Fourth Proportional to 990,941.76, 1,486,469.16 and 280,914

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Solution

The fourth proportional to 990,941.76, 1,486,469.16 and 280,914 is: 421,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,941.76 : 1,486,469.16 = 280,914 : x
  2. Step 2: Convert to fraction form
    990,941.76/1,486,469.16 = 280,914/x
  3. Step 3: Cross multiply
    990,941.76x = 1,486,469.16 × 280,914
  4. Step 4: Simplify right side
    990,941.76x = 417,569,997,612.24
  5. Step 5: Solve for x
    x = 417,569,997,612.24/990,941.76
  6. Step 6: Final answer
    x = 421,387.02

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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.