Home / 1,042,704.80-1,561,432.80-685,786.40

Finding the Fourth Proportional to 1,042,704.80, 1,561,432.80 and 685,786.40

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Solution

The fourth proportional to 1,042,704.80, 1,561,432.80 and 685,786.40 is: 1,026,953.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042,704.80 : 1,561,432.80 = 685,786.40 : x
  2. Step 2: Convert to fraction form
    1,042,704.80/1,561,432.80 = 685,786.40/x
  3. Step 3: Cross multiply
    1,042,704.80x = 1,561,432.80 × 685,786.40
  4. Step 4: Simplify right side
    1,042,704.80x = 1,070,809,378,753.92
  5. Step 5: Solve for x
    x = 1,070,809,378,753.92/1,042,704.80
  6. Step 6: Final answer
    x = 1,026,953.53

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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.