Home / 919,109.20-1,378,663.80-682,913.20

Finding the Fourth Proportional to 919,109.20, 1,378,663.80 and 682,913.20

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Solution

The fourth proportional to 919,109.20, 1,378,663.80 and 682,913.20 is: 1,024,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,109.20 : 1,378,663.80 = 682,913.20 : x
  2. Step 2: Convert to fraction form
    919,109.20/1,378,663.80 = 682,913.20/x
  3. Step 3: Cross multiply
    919,109.20x = 1,378,663.80 × 682,913.20
  4. Step 4: Simplify right side
    919,109.20x = 941,507,707,382.16
  5. Step 5: Solve for x
    x = 941,507,707,382.16/919,109.20
  6. Step 6: Final answer
    x = 1,024,369.80

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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.