Home / 822,642.80-1,234,693.20-485,261.60

Finding the Fourth Proportional to 822,642.80, 1,234,693.20 and 485,261.60

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Solution

The fourth proportional to 822,642.80, 1,234,693.20 and 485,261.60 is: 728,322.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,642.80 : 1,234,693.20 = 485,261.60 : x
  2. Step 2: Convert to fraction form
    822,642.80/1,234,693.20 = 485,261.60/x
  3. Step 3: Cross multiply
    822,642.80x = 1,234,693.20 × 485,261.60
  4. Step 4: Simplify right side
    822,642.80x = 599,149,197,741.12
  5. Step 5: Solve for x
    x = 599,149,197,741.12/822,642.80
  6. Step 6: Final answer
    x = 728,322.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.