Home / 1,638,569.69-2,261,226.58-913,401.80

Finding the Fourth Proportional to 1,638,569.69, 2,261,226.58 and 913,401.80

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Solution

The fourth proportional to 1,638,569.69, 2,261,226.58 and 913,401.80 is: 1,260,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,569.69 : 2,261,226.58 = 913,401.80 : x
  2. Step 2: Convert to fraction form
    1,638,569.69/2,261,226.58 = 913,401.80/x
  3. Step 3: Cross multiply
    1,638,569.69x = 2,261,226.58 × 913,401.80
  4. Step 4: Simplify right side
    1,638,569.69x = 2,065,408,423,269.81
  5. Step 5: Solve for x
    x = 2,065,408,423,269.81/1,638,569.69
  6. Step 6: Final answer
    x = 1,260,494.71

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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.