Home / 1,309,405.89-1,807,228.84-819,602.63

Finding the Fourth Proportional to 1,309,405.89, 1,807,228.84 and 819,602.63

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Solution

The fourth proportional to 1,309,405.89, 1,807,228.84 and 819,602.63 is: 1,131,207.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,405.89 : 1,807,228.84 = 819,602.63 : x
  2. Step 2: Convert to fraction form
    1,309,405.89/1,807,228.84 = 819,602.63/x
  3. Step 3: Cross multiply
    1,309,405.89x = 1,807,228.84 × 819,602.63
  4. Step 4: Simplify right side
    1,309,405.89x = 1,481,209,519,975.36
  5. Step 5: Solve for x
    x = 1,481,209,519,975.36/1,309,405.89
  6. Step 6: Final answer
    x = 1,131,207.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.