Home / 820,902.90-1,231,477.47-288,330.06

Finding the Fourth Proportional to 820,902.90, 1,231,477.47 and 288,330.06

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Solution

The fourth proportional to 820,902.90, 1,231,477.47 and 288,330.06 is: 432,538.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,902.90 : 1,231,477.47 = 288,330.06 : x
  2. Step 2: Convert to fraction form
    820,902.90/1,231,477.47 = 288,330.06/x
  3. Step 3: Cross multiply
    820,902.90x = 1,231,477.47 × 288,330.06
  4. Step 4: Simplify right side
    820,902.90x = 355,071,972,813.75
  5. Step 5: Solve for x
    x = 355,071,972,813.75/820,902.90
  6. Step 6: Final answer
    x = 432,538.33

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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.