Home / 1,189,417.89-1,641,354.94-645,542.73

Finding the Fourth Proportional to 1,189,417.89, 1,641,354.94 and 645,542.73

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Solution

The fourth proportional to 1,189,417.89, 1,641,354.94 and 645,542.73 is: 890,826.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,417.89 : 1,641,354.94 = 645,542.73 : x
  2. Step 2: Convert to fraction form
    1,189,417.89/1,641,354.94 = 645,542.73/x
  3. Step 3: Cross multiply
    1,189,417.89x = 1,641,354.94 × 645,542.73
  4. Step 4: Simplify right side
    1,189,417.89x = 1,059,564,749,673.51
  5. Step 5: Solve for x
    x = 1,059,564,749,673.51/1,189,417.89
  6. Step 6: Final answer
    x = 890,826.31

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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.