Home / 1,189,282.45-1,641,210.92-645,418.35

Finding the Fourth Proportional to 1,189,282.45, 1,641,210.92 and 645,418.35

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Solution

The fourth proportional to 1,189,282.45, 1,641,210.92 and 645,418.35 is: 890,677.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,282.45 : 1,641,210.92 = 645,418.35 : x
  2. Step 2: Convert to fraction form
    1,189,282.45/1,641,210.92 = 645,418.35/x
  3. Step 3: Cross multiply
    1,189,282.45x = 1,641,210.92 × 645,418.35
  4. Step 4: Simplify right side
    1,189,282.45x = 1,059,267,643,988.38
  5. Step 5: Solve for x
    x = 1,059,267,643,988.38/1,189,282.45
  6. Step 6: Final answer
    x = 890,677.94

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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.