Home / 1,330,354.80-1,993,343.40-768,409.20

Finding the Fourth Proportional to 1,330,354.80, 1,993,343.40 and 768,409.20

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Solution

The fourth proportional to 1,330,354.80, 1,993,343.40 and 768,409.20 is: 1,151,349.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,354.80 : 1,993,343.40 = 768,409.20 : x
  2. Step 2: Convert to fraction form
    1,330,354.80/1,993,343.40 = 768,409.20/x
  3. Step 3: Cross multiply
    1,330,354.80x = 1,993,343.40 × 768,409.20
  4. Step 4: Simplify right side
    1,330,354.80x = 1,531,703,407,319.28
  5. Step 5: Solve for x
    x = 1,531,703,407,319.28/1,330,354.80
  6. Step 6: Final answer
    x = 1,151,349.56

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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.