Home / 7,020,129.60-10,530,194.40-3,428,200.80

Finding the Fourth Proportional to 7,020,129.60, 10,530,194.40 and 3,428,200.80

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Solution

The fourth proportional to 7,020,129.60, 10,530,194.40 and 3,428,200.80 is: 5,142,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020,129.60 : 10,530,194.40 = 3,428,200.80 : x
  2. Step 2: Convert to fraction form
    7,020,129.60/10,530,194.40 = 3,428,200.80/x
  3. Step 3: Cross multiply
    7,020,129.60x = 10,530,194.40 × 3,428,200.80
  4. Step 4: Simplify right side
    7,020,129.60x = 36,099,620,866,235.52
  5. Step 5: Solve for x
    x = 36,099,620,866,235.52/7,020,129.60
  6. Step 6: Final answer
    x = 5,142,301.20

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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.