Home / 820,220.48-1,131,872.64-457,625.60

Finding the Fourth Proportional to 820,220.48, 1,131,872.64 and 457,625.60

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Solution

The fourth proportional to 820,220.48, 1,131,872.64 and 457,625.60 is: 631,505.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,220.48 : 1,131,872.64 = 457,625.60 : x
  2. Step 2: Convert to fraction form
    820,220.48/1,131,872.64 = 457,625.60/x
  3. Step 3: Cross multiply
    820,220.48x = 1,131,872.64 × 457,625.60
  4. Step 4: Simplify right side
    820,220.48x = 517,973,896,003.58
  5. Step 5: Solve for x
    x = 517,973,896,003.58/820,220.48
  6. Step 6: Final answer
    x = 631,505.68

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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.