Home / 1,189,500.73-1,641,512.67-645,636.63

Finding the Fourth Proportional to 1,189,500.73, 1,641,512.67 and 645,636.63

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Solution

The fourth proportional to 1,189,500.73, 1,641,512.67 and 645,636.63 is: 890,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,500.73 : 1,641,512.67 = 645,636.63 : x
  2. Step 2: Convert to fraction form
    1,189,500.73/1,641,512.67 = 645,636.63/x
  3. Step 3: Cross multiply
    1,189,500.73x = 1,641,512.67 × 645,636.63
  4. Step 4: Simplify right side
    1,189,500.73x = 1,059,820,706,747.01
  5. Step 5: Solve for x
    x = 1,059,820,706,747.01/1,189,500.73
  6. Step 6: Final answer
    x = 890,979.45

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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.