Home / 1,378,362.69-1,901,861.78-805,292.15

Finding the Fourth Proportional to 1,378,362.69, 1,901,861.78 and 805,292.15

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Solution

The fourth proportional to 1,378,362.69, 1,901,861.78 and 805,292.15 is: 1,111,140.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,362.69 : 1,901,861.78 = 805,292.15 : x
  2. Step 2: Convert to fraction form
    1,378,362.69/1,901,861.78 = 805,292.15/x
  3. Step 3: Cross multiply
    1,378,362.69x = 1,901,861.78 × 805,292.15
  4. Step 4: Simplify right side
    1,378,362.69x = 1,531,554,348,283.26
  5. Step 5: Solve for x
    x = 1,531,554,348,283.26/1,378,362.69
  6. Step 6: Final answer
    x = 1,111,140.31

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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.