Home / 630,680.20-869,949.48-449,450.20

Finding the Fourth Proportional to 630,680.20, 869,949.48 and 449,450.20

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Solution

The fourth proportional to 630,680.20, 869,949.48 and 449,450.20 is: 619,963.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,680.20 : 869,949.48 = 449,450.20 : x
  2. Step 2: Convert to fraction form
    630,680.20/869,949.48 = 449,450.20/x
  3. Step 3: Cross multiply
    630,680.20x = 869,949.48 × 449,450.20
  4. Step 4: Simplify right side
    630,680.20x = 390,998,967,775.90
  5. Step 5: Solve for x
    x = 390,998,967,775.90/630,680.20
  6. Step 6: Final answer
    x = 619,963.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.