Home / 1,189,401.54-1,641,389.85-645,543.84

Finding the Fourth Proportional to 1,189,401.54, 1,641,389.85 and 645,543.84

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Solution

The fourth proportional to 1,189,401.54, 1,641,389.85 and 645,543.84 is: 890,859.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,401.54 : 1,641,389.85 = 645,543.84 : x
  2. Step 2: Convert to fraction form
    1,189,401.54/1,641,389.85 = 645,543.84/x
  3. Step 3: Cross multiply
    1,189,401.54x = 1,641,389.85 × 645,543.84
  4. Step 4: Simplify right side
    1,189,401.54x = 1,059,589,106,706.02
  5. Step 5: Solve for x
    x = 1,059,589,106,706.02/1,189,401.54
  6. Step 6: Final answer
    x = 890,859.03

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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.