Home / 449,219.36-619,905.01-245,278.88

Finding the Fourth Proportional to 449,219.36, 619,905.01 and 245,278.88

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Solution

The fourth proportional to 449,219.36, 619,905.01 and 245,278.88 is: 338,475.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,219.36 : 619,905.01 = 245,278.88 : x
  2. Step 2: Convert to fraction form
    449,219.36/619,905.01 = 245,278.88/x
  3. Step 3: Cross multiply
    449,219.36x = 619,905.01 × 245,278.88
  4. Step 4: Simplify right side
    449,219.36x = 152,049,605,332.79
  5. Step 5: Solve for x
    x = 152,049,605,332.79/449,219.36
  6. Step 6: Final answer
    x = 338,475.18

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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.