Home / 1,378,370-1,902,272.20-774,762.96

Finding the Fourth Proportional to 1,378,370, 1,902,272.20 and 774,762.96

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Solution

The fourth proportional to 1,378,370, 1,902,272.20 and 774,762.96 is: 1,069,241.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,370 : 1,902,272.20 = 774,762.96 : x
  2. Step 2: Convert to fraction form
    1,378,370/1,902,272.20 = 774,762.96/x
  3. Step 3: Cross multiply
    1,378,370x = 1,902,272.20 × 774,762.96
  4. Step 4: Simplify right side
    1,378,370x = 1,473,810,040,397.71
  5. Step 5: Solve for x
    x = 1,473,810,040,397.71/1,378,370
  6. Step 6: Final answer
    x = 1,069,241.23

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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.