Home / 1,189,724.22-1,641,823.83-645,861.06

Finding the Fourth Proportional to 1,189,724.22, 1,641,823.83 and 645,861.06

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Solution

The fourth proportional to 1,189,724.22, 1,641,823.83 and 645,861.06 is: 891,290.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,724.22 : 1,641,823.83 = 645,861.06 : x
  2. Step 2: Convert to fraction form
    1,189,724.22/1,641,823.83 = 645,861.06/x
  3. Step 3: Cross multiply
    1,189,724.22x = 1,641,823.83 × 645,861.06
  4. Step 4: Simplify right side
    1,189,724.22x = 1,060,390,079,177.06
  5. Step 5: Solve for x
    x = 1,060,390,079,177.06/1,189,724.22
  6. Step 6: Final answer
    x = 891,290.65

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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.