Home / 1,189,455.81-1,641,450.81-645,591.80

Finding the Fourth Proportional to 1,189,455.81, 1,641,450.81 and 645,591.80

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Solution

The fourth proportional to 1,189,455.81, 1,641,450.81 and 645,591.80 is: 890,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,455.81 : 1,641,450.81 = 645,591.80 : x
  2. Step 2: Convert to fraction form
    1,189,455.81/1,641,450.81 = 645,591.80/x
  3. Step 3: Cross multiply
    1,189,455.81x = 1,641,450.81 × 645,591.80
  4. Step 4: Simplify right side
    1,189,455.81x = 1,059,707,174,832.10
  5. Step 5: Solve for x
    x = 1,059,707,174,832.10/1,189,455.81
  6. Step 6: Final answer
    x = 890,917.65

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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.