Home / 1,098,076.80-1,643,907.60-783,148.80

Finding the Fourth Proportional to 1,098,076.80, 1,643,907.60 and 783,148.80

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Solution

The fourth proportional to 1,098,076.80, 1,643,907.60 and 783,148.80 is: 1,172,435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,076.80 : 1,643,907.60 = 783,148.80 : x
  2. Step 2: Convert to fraction form
    1,098,076.80/1,643,907.60 = 783,148.80/x
  3. Step 3: Cross multiply
    1,098,076.80x = 1,643,907.60 × 783,148.80
  4. Step 4: Simplify right side
    1,098,076.80x = 1,287,424,264,250.88
  5. Step 5: Solve for x
    x = 1,287,424,264,250.88/1,098,076.80
  6. Step 6: Final answer
    x = 1,172,435.54

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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.