Home / 1,911,804.50-2,638,348.31-1,353,998.21

Finding the Fourth Proportional to 1,911,804.50, 2,638,348.31 and 1,353,998.21

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Solution

The fourth proportional to 1,911,804.50, 2,638,348.31 and 1,353,998.21 is: 1,868,558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,804.50 : 2,638,348.31 = 1,353,998.21 : x
  2. Step 2: Convert to fraction form
    1,911,804.50/2,638,348.31 = 1,353,998.21/x
  3. Step 3: Cross multiply
    1,911,804.50x = 2,638,348.31 × 1,353,998.21
  4. Step 4: Simplify right side
    1,911,804.50x = 3,572,318,889,096.53
  5. Step 5: Solve for x
    x = 3,572,318,889,096.53/1,911,804.50
  6. Step 6: Final answer
    x = 1,868,558.68

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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.