Home / 1,098,137.80-1,643,999.10-783,209.80

Finding the Fourth Proportional to 1,098,137.80, 1,643,999.10 and 783,209.80

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Solution

The fourth proportional to 1,098,137.80, 1,643,999.10 and 783,209.80 is: 1,172,526.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,137.80 : 1,643,999.10 = 783,209.80 : x
  2. Step 2: Convert to fraction form
    1,098,137.80/1,643,999.10 = 783,209.80/x
  3. Step 3: Cross multiply
    1,098,137.80x = 1,643,999.10 × 783,209.80
  4. Step 4: Simplify right side
    1,098,137.80x = 1,287,596,206,311.18
  5. Step 5: Solve for x
    x = 1,287,596,206,311.18/1,098,137.80
  6. Step 6: Final answer
    x = 1,172,526.99

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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.