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Finding the Fourth Proportional to 1,378,368, 1,902,269.44 and 774,760.96

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Solution

The fourth proportional to 1,378,368, 1,902,269.44 and 774,760.96 is: 1,069,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,368 : 1,902,269.44 = 774,760.96 : x
  2. Step 2: Convert to fraction form
    1,378,368/1,902,269.44 = 774,760.96/x
  3. Step 3: Cross multiply
    1,378,368x = 1,902,269.44 × 774,760.96
  4. Step 4: Simplify right side
    1,378,368x = 1,473,804,097,513.06
  5. Step 5: Solve for x
    x = 1,473,804,097,513.06/1,378,368
  6. Step 6: Final answer
    x = 1,069,238.47

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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.