Home / 1,172,972.54-1,618,701.09-636,428.54

Finding the Fourth Proportional to 1,172,972.54, 1,618,701.09 and 636,428.54

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Solution

The fourth proportional to 1,172,972.54, 1,618,701.09 and 636,428.54 is: 878,270.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,972.54 : 1,618,701.09 = 636,428.54 : x
  2. Step 2: Convert to fraction form
    1,172,972.54/1,618,701.09 = 636,428.54/x
  3. Step 3: Cross multiply
    1,172,972.54x = 1,618,701.09 × 636,428.54
  4. Step 4: Simplify right side
    1,172,972.54x = 1,030,187,571,405.11
  5. Step 5: Solve for x
    x = 1,030,187,571,405.11/1,172,972.54
  6. Step 6: Final answer
    x = 878,270.83

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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.