Home / 7,280,742.80-10,921,114.20-1,961,958.80

Finding the Fourth Proportional to 7,280,742.80, 10,921,114.20 and 1,961,958.80

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Solution

The fourth proportional to 7,280,742.80, 10,921,114.20 and 1,961,958.80 is: 2,942,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280,742.80 : 10,921,114.20 = 1,961,958.80 : x
  2. Step 2: Convert to fraction form
    7,280,742.80/10,921,114.20 = 1,961,958.80/x
  3. Step 3: Cross multiply
    7,280,742.80x = 10,921,114.20 × 1,961,958.80
  4. Step 4: Simplify right side
    7,280,742.80x = 21,426,776,110,494.96
  5. Step 5: Solve for x
    x = 21,426,776,110,494.96/7,280,742.80
  6. Step 6: Final answer
    x = 2,942,938.20

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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.