Home / 1,378,460.76-1,902,362.94-774,887.64

Finding the Fourth Proportional to 1,378,460.76, 1,902,362.94 and 774,887.64

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Solution

The fourth proportional to 1,378,460.76, 1,902,362.94 and 774,887.64 is: 1,069,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,460.76 : 1,902,362.94 = 774,887.64 : x
  2. Step 2: Convert to fraction form
    1,378,460.76/1,902,362.94 = 774,887.64/x
  3. Step 3: Cross multiply
    1,378,460.76x = 1,902,362.94 × 774,887.64
  4. Step 4: Simplify right side
    1,378,460.76x = 1,474,117,529,000.06
  5. Step 5: Solve for x
    x = 1,474,117,529,000.06/1,378,460.76
  6. Step 6: Final answer
    x = 1,069,393.90

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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.