Home / 1,107,895.20-1,661,842.80-685,802.40

Finding the Fourth Proportional to 1,107,895.20, 1,661,842.80 and 685,802.40

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Solution

The fourth proportional to 1,107,895.20, 1,661,842.80 and 685,802.40 is: 1,028,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,895.20 : 1,661,842.80 = 685,802.40 : x
  2. Step 2: Convert to fraction form
    1,107,895.20/1,661,842.80 = 685,802.40/x
  3. Step 3: Cross multiply
    1,107,895.20x = 1,661,842.80 × 685,802.40
  4. Step 4: Simplify right side
    1,107,895.20x = 1,139,695,780,662.72
  5. Step 5: Solve for x
    x = 1,139,695,780,662.72/1,107,895.20
  6. Step 6: Final answer
    x = 1,028,703.60

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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.