Home / 1,240,864.80-1,859,328.90-819,648.60

Finding the Fourth Proportional to 1,240,864.80, 1,859,328.90 and 819,648.60

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Solution

The fourth proportional to 1,240,864.80, 1,859,328.90 and 819,648.60 is: 1,228,172.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,864.80 : 1,859,328.90 = 819,648.60 : x
  2. Step 2: Convert to fraction form
    1,240,864.80/1,859,328.90 = 819,648.60/x
  3. Step 3: Cross multiply
    1,240,864.80x = 1,859,328.90 × 819,648.60
  4. Step 4: Simplify right side
    1,240,864.80x = 1,523,996,329,824.54
  5. Step 5: Solve for x
    x = 1,523,996,329,824.54/1,240,864.80
  6. Step 6: Final answer
    x = 1,228,172.75

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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.