Home / 1,189,498.70-1,641,464.20-645,622.92

Finding the Fourth Proportional to 1,189,498.70, 1,641,464.20 and 645,622.92

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Solution

The fourth proportional to 1,189,498.70, 1,641,464.20 and 645,622.92 is: 890,935.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,498.70 : 1,641,464.20 = 645,622.92 : x
  2. Step 2: Convert to fraction form
    1,189,498.70/1,641,464.20 = 645,622.92/x
  3. Step 3: Cross multiply
    1,189,498.70x = 1,641,464.20 × 645,622.92
  4. Step 4: Simplify right side
    1,189,498.70x = 1,059,766,909,879.46
  5. Step 5: Solve for x
    x = 1,059,766,909,879.46/1,189,498.70
  6. Step 6: Final answer
    x = 890,935.74

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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.