Home / 1,393,515.72-1,923,050.34-789,903.72

Finding the Fourth Proportional to 1,393,515.72, 1,923,050.34 and 789,903.72

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Solution

The fourth proportional to 1,393,515.72, 1,923,050.34 and 789,903.72 is: 1,090,066.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,515.72 : 1,923,050.34 = 789,903.72 : x
  2. Step 2: Convert to fraction form
    1,393,515.72/1,923,050.34 = 789,903.72/x
  3. Step 3: Cross multiply
    1,393,515.72x = 1,923,050.34 × 789,903.72
  4. Step 4: Simplify right side
    1,393,515.72x = 1,519,024,617,313.27
  5. Step 5: Solve for x
    x = 1,519,024,617,313.27/1,393,515.72
  6. Step 6: Final answer
    x = 1,090,066.37

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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.