Home / 1,179,974.80-1,628,364.72-643,430.80

Finding the Fourth Proportional to 1,179,974.80, 1,628,364.72 and 643,430.80

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Solution

The fourth proportional to 1,179,974.80, 1,628,364.72 and 643,430.80 is: 887,934.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,974.80 : 1,628,364.72 = 643,430.80 : x
  2. Step 2: Convert to fraction form
    1,179,974.80/1,628,364.72 = 643,430.80/x
  3. Step 3: Cross multiply
    1,179,974.80x = 1,628,364.72 × 643,430.80
  4. Step 4: Simplify right side
    1,179,974.80x = 1,047,740,014,481.38
  5. Step 5: Solve for x
    x = 1,047,740,014,481.38/1,179,974.80
  6. Step 6: Final answer
    x = 887,934.23

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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.