Home / 1,189,143.96-1,641,010.34-645,265.91

Finding the Fourth Proportional to 1,189,143.96, 1,641,010.34 and 645,265.91

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Solution

The fourth proportional to 1,189,143.96, 1,641,010.34 and 645,265.91 is: 890,462.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,143.96 : 1,641,010.34 = 645,265.91 : x
  2. Step 2: Convert to fraction form
    1,189,143.96/1,641,010.34 = 645,265.91/x
  3. Step 3: Cross multiply
    1,189,143.96x = 1,641,010.34 × 645,265.91
  4. Step 4: Simplify right side
    1,189,143.96x = 1,058,888,032,445.58
  5. Step 5: Solve for x
    x = 1,058,888,032,445.58/1,189,143.96
  6. Step 6: Final answer
    x = 890,462.44

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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.