Home / 451,220.85-622,967.90-290,355.46

Finding the Fourth Proportional to 451,220.85, 622,967.90 and 290,355.46

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Solution

The fourth proportional to 451,220.85, 622,967.90 and 290,355.46 is: 400,872.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,220.85 : 622,967.90 = 290,355.46 : x
  2. Step 2: Convert to fraction form
    451,220.85/622,967.90 = 290,355.46/x
  3. Step 3: Cross multiply
    451,220.85x = 622,967.90 × 290,355.46
  4. Step 4: Simplify right side
    451,220.85x = 180,882,128,160.54
  5. Step 5: Solve for x
    x = 180,882,128,160.54/451,220.85
  6. Step 6: Final answer
    x = 400,872.72

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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.