Home / 1,330,019.47-1,995,309.78-431,391.43

Finding the Fourth Proportional to 1,330,019.47, 1,995,309.78 and 431,391.43

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Solution

The fourth proportional to 1,330,019.47, 1,995,309.78 and 431,391.43 is: 647,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,019.47 : 1,995,309.78 = 431,391.43 : x
  2. Step 2: Convert to fraction form
    1,330,019.47/1,995,309.78 = 431,391.43/x
  3. Step 3: Cross multiply
    1,330,019.47x = 1,995,309.78 × 431,391.43
  4. Step 4: Simplify right side
    1,330,019.47x = 860,759,539,287.19
  5. Step 5: Solve for x
    x = 860,759,539,287.19/1,330,019.47
  6. Step 6: Final answer
    x = 647,178.15

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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.