Home / 1,389,245.02-1,917,238.47-777,392.43

Finding the Fourth Proportional to 1,389,245.02, 1,917,238.47 and 777,392.43

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Solution

The fourth proportional to 1,389,245.02, 1,917,238.47 and 777,392.43 is: 1,072,846.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,245.02 : 1,917,238.47 = 777,392.43 : x
  2. Step 2: Convert to fraction form
    1,389,245.02/1,917,238.47 = 777,392.43/x
  3. Step 3: Cross multiply
    1,389,245.02x = 1,917,238.47 × 777,392.43
  4. Step 4: Simplify right side
    1,389,245.02x = 1,490,446,669,195.82
  5. Step 5: Solve for x
    x = 1,490,446,669,195.82/1,389,245.02
  6. Step 6: Final answer
    x = 1,072,846.51

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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.