Home / 1,189,486.60-1,641,447.50-645,610.68

Finding the Fourth Proportional to 1,189,486.60, 1,641,447.50 and 645,610.68

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Solution

The fourth proportional to 1,189,486.60, 1,641,447.50 and 645,610.68 is: 890,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,486.60 : 1,641,447.50 = 645,610.68 : x
  2. Step 2: Convert to fraction form
    1,189,486.60/1,641,447.50 = 645,610.68/x
  3. Step 3: Cross multiply
    1,189,486.60x = 1,641,447.50 × 645,610.68
  4. Step 4: Simplify right side
    1,189,486.60x = 1,059,736,036,659.30
  5. Step 5: Solve for x
    x = 1,059,736,036,659.30/1,189,486.60
  6. Step 6: Final answer
    x = 890,918.85

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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.