Home / 1,245,785.80-1,870,752.30-685,222.60

Finding the Fourth Proportional to 1,245,785.80, 1,870,752.30 and 685,222.60

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Solution

The fourth proportional to 1,245,785.80, 1,870,752.30 and 685,222.60 is: 1,028,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,785.80 : 1,870,752.30 = 685,222.60 : x
  2. Step 2: Convert to fraction form
    1,245,785.80/1,870,752.30 = 685,222.60/x
  3. Step 3: Cross multiply
    1,245,785.80x = 1,870,752.30 × 685,222.60
  4. Step 4: Simplify right side
    1,245,785.80x = 1,281,881,754,961.98
  5. Step 5: Solve for x
    x = 1,281,881,754,961.98/1,245,785.80
  6. Step 6: Final answer
    x = 1,028,974.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.