Home / 1,378,346.70-1,901,839.64-805,276.20

Finding the Fourth Proportional to 1,378,346.70, 1,901,839.64 and 805,276.20

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Solution

The fourth proportional to 1,378,346.70, 1,901,839.64 and 805,276.20 is: 1,111,118.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,346.70 : 1,901,839.64 = 805,276.20 : x
  2. Step 2: Convert to fraction form
    1,378,346.70/1,901,839.64 = 805,276.20/x
  3. Step 3: Cross multiply
    1,378,346.70x = 1,901,839.64 × 805,276.20
  4. Step 4: Simplify right side
    1,378,346.70x = 1,531,506,198,308.57
  5. Step 5: Solve for x
    x = 1,531,506,198,308.57/1,378,346.70
  6. Step 6: Final answer
    x = 1,111,118.27

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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.