Home / 1,430,542.80-2,145,814.20-1,272,949.20

Finding the Fourth Proportional to 1,430,542.80, 2,145,814.20 and 1,272,949.20

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Solution

The fourth proportional to 1,430,542.80, 2,145,814.20 and 1,272,949.20 is: 1,909,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430,542.80 : 2,145,814.20 = 1,272,949.20 : x
  2. Step 2: Convert to fraction form
    1,430,542.80/2,145,814.20 = 1,272,949.20/x
  3. Step 3: Cross multiply
    1,430,542.80x = 2,145,814.20 × 1,272,949.20
  4. Step 4: Simplify right side
    1,430,542.80x = 2,731,512,469,238.64
  5. Step 5: Solve for x
    x = 2,731,512,469,238.64/1,430,542.80
  6. Step 6: Final answer
    x = 1,909,423.80

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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.