Home / 1,309,999.68-1,807,786.80-729,213.60

Finding the Fourth Proportional to 1,309,999.68, 1,807,786.80 and 729,213.60

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Solution

The fourth proportional to 1,309,999.68, 1,807,786.80 and 729,213.60 is: 1,006,307.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,999.68 : 1,807,786.80 = 729,213.60 : x
  2. Step 2: Convert to fraction form
    1,309,999.68/1,807,786.80 = 729,213.60/x
  3. Step 3: Cross multiply
    1,309,999.68x = 1,807,786.80 × 729,213.60
  4. Step 4: Simplify right side
    1,309,999.68x = 1,318,262,720,460.48
  5. Step 5: Solve for x
    x = 1,318,262,720,460.48/1,309,999.68
  6. Step 6: Final answer
    x = 1,006,307.67

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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.