Home / 1,419,232.80-2,128,849.20-421,831.20

Finding the Fourth Proportional to 1,419,232.80, 2,128,849.20 and 421,831.20

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Solution

The fourth proportional to 1,419,232.80, 2,128,849.20 and 421,831.20 is: 632,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,232.80 : 2,128,849.20 = 421,831.20 : x
  2. Step 2: Convert to fraction form
    1,419,232.80/2,128,849.20 = 421,831.20/x
  3. Step 3: Cross multiply
    1,419,232.80x = 2,128,849.20 × 421,831.20
  4. Step 4: Simplify right side
    1,419,232.80x = 898,015,012,655.04
  5. Step 5: Solve for x
    x = 898,015,012,655.04/1,419,232.80
  6. Step 6: Final answer
    x = 632,746.80

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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.