Home / 1,019,172.76-1,528,943.01-419,806.78

Finding the Fourth Proportional to 1,019,172.76, 1,528,943.01 and 419,806.78

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Solution

The fourth proportional to 1,019,172.76, 1,528,943.01 and 419,806.78 is: 629,785.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,172.76 : 1,528,943.01 = 419,806.78 : x
  2. Step 2: Convert to fraction form
    1,019,172.76/1,528,943.01 = 419,806.78/x
  3. Step 3: Cross multiply
    1,019,172.76x = 1,528,943.01 × 419,806.78
  4. Step 4: Simplify right side
    1,019,172.76x = 641,860,641,831.61
  5. Step 5: Solve for x
    x = 641,860,641,831.61/1,019,172.76
  6. Step 6: Final answer
    x = 629,785.91

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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.