Home / 1,189,430.62-1,641,415.07-645,566.42

Finding the Fourth Proportional to 1,189,430.62, 1,641,415.07 and 645,566.42

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Solution

The fourth proportional to 1,189,430.62, 1,641,415.07 and 645,566.42 is: 890,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,430.62 : 1,641,415.07 = 645,566.42 : x
  2. Step 2: Convert to fraction form
    1,189,430.62/1,641,415.07 = 645,566.42/x
  3. Step 3: Cross multiply
    1,189,430.62x = 1,641,415.07 × 645,566.42
  4. Step 4: Simplify right side
    1,189,430.62x = 1,059,642,456,191.40
  5. Step 5: Solve for x
    x = 1,059,642,456,191.40/1,189,430.62
  6. Step 6: Final answer
    x = 890,882.11

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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.