Home / 1,330,019.49-1,995,309.77-431,391.43

Finding the Fourth Proportional to 1,330,019.49, 1,995,309.77 and 431,391.43

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Solution

The fourth proportional to 1,330,019.49, 1,995,309.77 and 431,391.43 is: 647,178.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,019.49 : 1,995,309.77 = 431,391.43 : x
  2. Step 2: Convert to fraction form
    1,330,019.49/1,995,309.77 = 431,391.43/x
  3. Step 3: Cross multiply
    1,330,019.49x = 1,995,309.77 × 431,391.43
  4. Step 4: Simplify right side
    1,330,019.49x = 860,759,534,973.27
  5. Step 5: Solve for x
    x = 860,759,534,973.27/1,330,019.49
  6. Step 6: Final answer
    x = 647,178.14

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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.