Home / 809,407.20-1,214,110.80-436,159.20

Finding the Fourth Proportional to 809,407.20, 1,214,110.80 and 436,159.20

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Solution

The fourth proportional to 809,407.20, 1,214,110.80 and 436,159.20 is: 654,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,407.20 : 1,214,110.80 = 436,159.20 : x
  2. Step 2: Convert to fraction form
    809,407.20/1,214,110.80 = 436,159.20/x
  3. Step 3: Cross multiply
    809,407.20x = 1,214,110.80 × 436,159.20
  4. Step 4: Simplify right side
    809,407.20x = 529,545,595,239.36
  5. Step 5: Solve for x
    x = 529,545,595,239.36/809,407.20
  6. Step 6: Final answer
    x = 654,238.80

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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.