Home / 1,098,108.80-1,643,955.60-783,180.80

Finding the Fourth Proportional to 1,098,108.80, 1,643,955.60 and 783,180.80

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Solution

The fourth proportional to 1,098,108.80, 1,643,955.60 and 783,180.80 is: 1,172,483.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,108.80 : 1,643,955.60 = 783,180.80 : x
  2. Step 2: Convert to fraction form
    1,098,108.80/1,643,955.60 = 783,180.80/x
  3. Step 3: Cross multiply
    1,098,108.80x = 1,643,955.60 × 783,180.80
  4. Step 4: Simplify right side
    1,098,108.80x = 1,287,514,461,972.48
  5. Step 5: Solve for x
    x = 1,287,514,461,972.48/1,098,108.80
  6. Step 6: Final answer
    x = 1,172,483.51

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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.