Home / 812,117.74-1,120,708.89-449,533.84

Finding the Fourth Proportional to 812,117.74, 1,120,708.89 and 449,533.84

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Solution

The fourth proportional to 812,117.74, 1,120,708.89 and 449,533.84 is: 620,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,117.74 : 1,120,708.89 = 449,533.84 : x
  2. Step 2: Convert to fraction form
    812,117.74/1,120,708.89 = 449,533.84/x
  3. Step 3: Cross multiply
    812,117.74x = 1,120,708.89 × 449,533.84
  4. Step 4: Simplify right side
    812,117.74x = 503,796,570,843.84
  5. Step 5: Solve for x
    x = 503,796,570,843.84/812,117.74
  6. Step 6: Final answer
    x = 620,349.18

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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.