Home / 820,635.49-1,231,015.47-221,587.93

Finding the Fourth Proportional to 820,635.49, 1,231,015.47 and 221,587.93

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Solution

The fourth proportional to 820,635.49, 1,231,015.47 and 221,587.93 is: 332,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,635.49 : 1,231,015.47 = 221,587.93 : x
  2. Step 2: Convert to fraction form
    820,635.49/1,231,015.47 = 221,587.93/x
  3. Step 3: Cross multiply
    820,635.49x = 1,231,015.47 × 221,587.93
  4. Step 4: Simplify right side
    820,635.49x = 272,778,169,795.28
  5. Step 5: Solve for x
    x = 272,778,169,795.28/820,635.49
  6. Step 6: Final answer
    x = 332,398.70

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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.