Home / 693,087.60-1,039,712.40-219,820.80

Finding the Fourth Proportional to 693,087.60, 1,039,712.40 and 219,820.80

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Solution

The fourth proportional to 693,087.60, 1,039,712.40 and 219,820.80 is: 329,756.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,087.60 : 1,039,712.40 = 219,820.80 : x
  2. Step 2: Convert to fraction form
    693,087.60/1,039,712.40 = 219,820.80/x
  3. Step 3: Cross multiply
    693,087.60x = 1,039,712.40 × 219,820.80
  4. Step 4: Simplify right side
    693,087.60x = 228,550,411,537.92
  5. Step 5: Solve for x
    x = 228,550,411,537.92/693,087.60
  6. Step 6: Final answer
    x = 329,756.89

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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.