Home / 781,648.84-1,172,493.42-213,034.60

Finding the Fourth Proportional to 781,648.84, 1,172,493.42 and 213,034.60

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Solution

The fourth proportional to 781,648.84, 1,172,493.42 and 213,034.60 is: 319,557.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,648.84 : 1,172,493.42 = 213,034.60 : x
  2. Step 2: Convert to fraction form
    781,648.84/1,172,493.42 = 213,034.60/x
  3. Step 3: Cross multiply
    781,648.84x = 1,172,493.42 × 213,034.60
  4. Step 4: Simplify right side
    781,648.84x = 249,781,666,732.33
  5. Step 5: Solve for x
    x = 249,781,666,732.33/781,648.84
  6. Step 6: Final answer
    x = 319,557.39

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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.