Home / 1,189,423.79-1,641,406.37-645,559.52

Finding the Fourth Proportional to 1,189,423.79, 1,641,406.37 and 645,559.52

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Solution

The fourth proportional to 1,189,423.79, 1,641,406.37 and 645,559.52 is: 890,872.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,423.79 : 1,641,406.37 = 645,559.52 : x
  2. Step 2: Convert to fraction form
    1,189,423.79/1,641,406.37 = 645,559.52/x
  3. Step 3: Cross multiply
    1,189,423.79x = 1,641,406.37 × 645,559.52
  4. Step 4: Simplify right side
    1,189,423.79x = 1,059,625,508,342.14
  5. Step 5: Solve for x
    x = 1,059,625,508,342.14/1,189,423.79
  6. Step 6: Final answer
    x = 890,872.97

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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.