Home / 1,378,713.19-1,901,288.34-919,846.48

Finding the Fourth Proportional to 1,378,713.19, 1,901,288.34 and 919,846.48

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Solution

The fourth proportional to 1,378,713.19, 1,901,288.34 and 919,846.48 is: 1,268,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,713.19 : 1,901,288.34 = 919,846.48 : x
  2. Step 2: Convert to fraction form
    1,378,713.19/1,901,288.34 = 919,846.48/x
  3. Step 3: Cross multiply
    1,378,713.19x = 1,901,288.34 × 919,846.48
  4. Step 4: Simplify right side
    1,378,713.19x = 1,748,893,387,014.04
  5. Step 5: Solve for x
    x = 1,748,893,387,014.04/1,378,713.19
  6. Step 6: Final answer
    x = 1,268,496.89

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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.