Home / 700,139.20-1,048,365.60-512,132.80

Finding the Fourth Proportional to 700,139.20, 1,048,365.60 and 512,132.80

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Solution

The fourth proportional to 700,139.20, 1,048,365.60 and 512,132.80 is: 766,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,139.20 : 1,048,365.60 = 512,132.80 : x
  2. Step 2: Convert to fraction form
    700,139.20/1,048,365.60 = 512,132.80/x
  3. Step 3: Cross multiply
    700,139.20x = 1,048,365.60 × 512,132.80
  4. Step 4: Simplify right side
    700,139.20x = 536,902,410,151.68
  5. Step 5: Solve for x
    x = 536,902,410,151.68/700,139.20
  6. Step 6: Final answer
    x = 766,850.95

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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.