Home / 1,913,211.54-2,640,132.28-1,188,043.72

Finding the Fourth Proportional to 1,913,211.54, 2,640,132.28 and 1,188,043.72

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Solution

The fourth proportional to 1,913,211.54, 2,640,132.28 and 1,188,043.72 is: 1,639,438.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,211.54 : 2,640,132.28 = 1,188,043.72 : x
  2. Step 2: Convert to fraction form
    1,913,211.54/2,640,132.28 = 1,188,043.72/x
  3. Step 3: Cross multiply
    1,913,211.54x = 2,640,132.28 × 1,188,043.72
  4. Step 4: Simplify right side
    1,913,211.54x = 3,136,592,575,223.28
  5. Step 5: Solve for x
    x = 3,136,592,575,223.28/1,913,211.54
  6. Step 6: Final answer
    x = 1,639,438.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.