Home / 1,189,193.48-1,641,078.42-645,315.56

Finding the Fourth Proportional to 1,189,193.48, 1,641,078.42 and 645,315.56

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Solution

The fourth proportional to 1,189,193.48, 1,641,078.42 and 645,315.56 is: 890,530.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,193.48 : 1,641,078.42 = 645,315.56 : x
  2. Step 2: Convert to fraction form
    1,189,193.48/1,641,078.42 = 645,315.56/x
  3. Step 3: Cross multiply
    1,189,193.48x = 1,641,078.42 × 645,315.56
  4. Step 4: Simplify right side
    1,189,193.48x = 1,059,013,439,606.22
  5. Step 5: Solve for x
    x = 1,059,013,439,606.22/1,189,193.48
  6. Step 6: Final answer
    x = 890,530.82

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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.