Home / 814,190.60-1,221,289.04-340,543.72

Finding the Fourth Proportional to 814,190.60, 1,221,289.04 and 340,543.72

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Solution

The fourth proportional to 814,190.60, 1,221,289.04 and 340,543.72 is: 510,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,190.60 : 1,221,289.04 = 340,543.72 : x
  2. Step 2: Convert to fraction form
    814,190.60/1,221,289.04 = 340,543.72/x
  3. Step 3: Cross multiply
    814,190.60x = 1,221,289.04 × 340,543.72
  4. Step 4: Simplify right side
    814,190.60x = 415,902,312,876.83
  5. Step 5: Solve for x
    x = 415,902,312,876.83/814,190.60
  6. Step 6: Final answer
    x = 510,816.89

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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.