Home / 1,330,019.51-1,995,309.78-431,391.46

Finding the Fourth Proportional to 1,330,019.51, 1,995,309.78 and 431,391.46

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Solution

The fourth proportional to 1,330,019.51, 1,995,309.78 and 431,391.46 is: 647,178.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,019.51 : 1,995,309.78 = 431,391.46 : x
  2. Step 2: Convert to fraction form
    1,330,019.51/1,995,309.78 = 431,391.46/x
  3. Step 3: Cross multiply
    1,330,019.51x = 1,995,309.78 × 431,391.46
  4. Step 4: Simplify right side
    1,330,019.51x = 860,759,599,146.48
  5. Step 5: Solve for x
    x = 860,759,599,146.48/1,330,019.51
  6. Step 6: Final answer
    x = 647,178.17

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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.