Home / 1,189,230.78-1,641,139.52-645,366.56

Finding the Fourth Proportional to 1,189,230.78, 1,641,139.52 and 645,366.56

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Solution

The fourth proportional to 1,189,230.78, 1,641,139.52 and 645,366.56 is: 890,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,230.78 : 1,641,139.52 = 645,366.56 : x
  2. Step 2: Convert to fraction form
    1,189,230.78/1,641,139.52 = 645,366.56/x
  3. Step 3: Cross multiply
    1,189,230.78x = 1,641,139.52 × 645,366.56
  4. Step 4: Simplify right side
    1,189,230.78x = 1,059,136,566,502.45
  5. Step 5: Solve for x
    x = 1,059,136,566,502.45/1,189,230.78
  6. Step 6: Final answer
    x = 890,606.42

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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.