Home / 1,189,620.78-1,641,632.04-645,744.90

Finding the Fourth Proportional to 1,189,620.78, 1,641,632.04 and 645,744.90

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Solution

The fourth proportional to 1,189,620.78, 1,641,632.04 and 645,744.90 is: 891,103.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,620.78 : 1,641,632.04 = 645,744.90 : x
  2. Step 2: Convert to fraction form
    1,189,620.78/1,641,632.04 = 645,744.90/x
  3. Step 3: Cross multiply
    1,189,620.78x = 1,641,632.04 × 645,744.90
  4. Step 4: Simplify right side
    1,189,620.78x = 1,060,075,517,506.60
  5. Step 5: Solve for x
    x = 1,060,075,517,506.60/1,189,620.78
  6. Step 6: Final answer
    x = 891,103.73

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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.