Home / 829,288.20-1,243,010.70-455,579.40

Finding the Fourth Proportional to 829,288.20, 1,243,010.70 and 455,579.40

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Solution

The fourth proportional to 829,288.20, 1,243,010.70 and 455,579.40 is: 682,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,288.20 : 1,243,010.70 = 455,579.40 : x
  2. Step 2: Convert to fraction form
    829,288.20/1,243,010.70 = 455,579.40/x
  3. Step 3: Cross multiply
    829,288.20x = 1,243,010.70 × 455,579.40
  4. Step 4: Simplify right side
    829,288.20x = 566,290,068,899.58
  5. Step 5: Solve for x
    x = 566,290,068,899.58/829,288.20
  6. Step 6: Final answer
    x = 682,862.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.