Home / 2,128,603.40-3,195,237.90-1,330,785.80

Finding the Fourth Proportional to 2,128,603.40, 3,195,237.90 and 1,330,785.80

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Solution

The fourth proportional to 2,128,603.40, 3,195,237.90 and 1,330,785.80 is: 1,997,637.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,603.40 : 3,195,237.90 = 1,330,785.80 : x
  2. Step 2: Convert to fraction form
    2,128,603.40/3,195,237.90 = 1,330,785.80/x
  3. Step 3: Cross multiply
    2,128,603.40x = 3,195,237.90 × 1,330,785.80
  4. Step 4: Simplify right side
    2,128,603.40x = 4,252,177,224,941.82
  5. Step 5: Solve for x
    x = 4,252,177,224,941.82/2,128,603.40
  6. Step 6: Final answer
    x = 1,997,637.15

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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.