Home / 1,189,579.67-1,641,621.42-645,715.16

Finding the Fourth Proportional to 1,189,579.67, 1,641,621.42 and 645,715.16

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Solution

The fourth proportional to 1,189,579.67, 1,641,621.42 and 645,715.16 is: 891,087.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,579.67 : 1,641,621.42 = 645,715.16 : x
  2. Step 2: Convert to fraction form
    1,189,579.67/1,641,621.42 = 645,715.16/x
  3. Step 3: Cross multiply
    1,189,579.67x = 1,641,621.42 × 645,715.16
  4. Step 4: Simplify right side
    1,189,579.67x = 1,060,019,837,874.73
  5. Step 5: Solve for x
    x = 1,060,019,837,874.73/1,189,579.67
  6. Step 6: Final answer
    x = 891,087.72

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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.