Home / 842,140.80-1,263,711.51-310,035.60

Finding the Fourth Proportional to 842,140.80, 1,263,711.51 and 310,035.60

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Solution

The fourth proportional to 842,140.80, 1,263,711.51 and 310,035.60 is: 465,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,140.80 : 1,263,711.51 = 310,035.60 : x
  2. Step 2: Convert to fraction form
    842,140.80/1,263,711.51 = 310,035.60/x
  3. Step 3: Cross multiply
    842,140.80x = 1,263,711.51 × 310,035.60
  4. Step 4: Simplify right side
    842,140.80x = 391,795,556,229.76
  5. Step 5: Solve for x
    x = 391,795,556,229.76/842,140.80
  6. Step 6: Final answer
    x = 465,237.59

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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.