Home / 1,212,981.60-1,819,472.40-814,400.85

Finding the Fourth Proportional to 1,212,981.60, 1,819,472.40 and 814,400.85

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Solution

The fourth proportional to 1,212,981.60, 1,819,472.40 and 814,400.85 is: 1,221,601.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,981.60 : 1,819,472.40 = 814,400.85 : x
  2. Step 2: Convert to fraction form
    1,212,981.60/1,819,472.40 = 814,400.85/x
  3. Step 3: Cross multiply
    1,212,981.60x = 1,819,472.40 × 814,400.85
  4. Step 4: Simplify right side
    1,212,981.60x = 1,481,779,869,111.54
  5. Step 5: Solve for x
    x = 1,481,779,869,111.54/1,212,981.60
  6. Step 6: Final answer
    x = 1,221,601.28

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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.