Home / 820,784.18-1,230,196.75-382,013.47

Finding the Fourth Proportional to 820,784.18, 1,230,196.75 and 382,013.47

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Solution

The fourth proportional to 820,784.18, 1,230,196.75 and 382,013.47 is: 572,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,784.18 : 1,230,196.75 = 382,013.47 : x
  2. Step 2: Convert to fraction form
    820,784.18/1,230,196.75 = 382,013.47/x
  3. Step 3: Cross multiply
    820,784.18x = 1,230,196.75 × 382,013.47
  4. Step 4: Simplify right side
    820,784.18x = 469,951,726,215.21
  5. Step 5: Solve for x
    x = 469,951,726,215.21/820,784.18
  6. Step 6: Final answer
    x = 572,564.31

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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.