Home / 787,002.80-1,180,990.20-313,638.80

Finding the Fourth Proportional to 787,002.80, 1,180,990.20 and 313,638.80

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Solution

The fourth proportional to 787,002.80, 1,180,990.20 and 313,638.80 is: 470,651.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,002.80 : 1,180,990.20 = 313,638.80 : x
  2. Step 2: Convert to fraction form
    787,002.80/1,180,990.20 = 313,638.80/x
  3. Step 3: Cross multiply
    787,002.80x = 1,180,990.20 × 313,638.80
  4. Step 4: Simplify right side
    787,002.80x = 370,404,349,139.76
  5. Step 5: Solve for x
    x = 370,404,349,139.76/787,002.80
  6. Step 6: Final answer
    x = 470,651.88

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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.