Home / 722,187.36-996,606.35-399,890.52

Finding the Fourth Proportional to 722,187.36, 996,606.35 and 399,890.52

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Solution

The fourth proportional to 722,187.36, 996,606.35 and 399,890.52 is: 551,842.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,187.36 : 996,606.35 = 399,890.52 : x
  2. Step 2: Convert to fraction form
    722,187.36/996,606.35 = 399,890.52/x
  3. Step 3: Cross multiply
    722,187.36x = 996,606.35 × 399,890.52
  4. Step 4: Simplify right side
    722,187.36x = 398,533,431,036.94
  5. Step 5: Solve for x
    x = 398,533,431,036.94/722,187.36
  6. Step 6: Final answer
    x = 551,842.16

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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.