Home / 1,638,621.65-2,261,432.49-903,719.66

Finding the Fourth Proportional to 1,638,621.65, 2,261,432.49 and 903,719.66

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Solution

The fourth proportional to 1,638,621.65, 2,261,432.49 and 903,719.66 is: 1,247,207.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,621.65 : 2,261,432.49 = 903,719.66 : x
  2. Step 2: Convert to fraction form
    1,638,621.65/2,261,432.49 = 903,719.66/x
  3. Step 3: Cross multiply
    1,638,621.65x = 2,261,432.49 × 903,719.66
  4. Step 4: Simplify right side
    1,638,621.65x = 2,043,700,986,279.64
  5. Step 5: Solve for x
    x = 2,043,700,986,279.64/1,638,621.65
  6. Step 6: Final answer
    x = 1,247,207.36

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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.