Home / 1,189,277.28-1,641,214.67-645,417.77

Finding the Fourth Proportional to 1,189,277.28, 1,641,214.67 and 645,417.77

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Solution

The fourth proportional to 1,189,277.28, 1,641,214.67 and 645,417.77 is: 890,683.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,277.28 : 1,641,214.67 = 645,417.77 : x
  2. Step 2: Convert to fraction form
    1,189,277.28/1,641,214.67 = 645,417.77/x
  3. Step 3: Cross multiply
    1,189,277.28x = 1,641,214.67 × 645,417.77
  4. Step 4: Simplify right side
    1,189,277.28x = 1,059,269,100,969.52
  5. Step 5: Solve for x
    x = 1,059,269,100,969.52/1,189,277.28
  6. Step 6: Final answer
    x = 890,683.04

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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.