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Finding the Fourth Proportional to 1,285,693.09, 1,928,860.73 and 907,352.77

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Solution

The fourth proportional to 1,285,693.09, 1,928,860.73 and 907,352.77 is: 1,361,255.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,693.09 : 1,928,860.73 = 907,352.77 : x
  2. Step 2: Convert to fraction form
    1,285,693.09/1,928,860.73 = 907,352.77/x
  3. Step 3: Cross multiply
    1,285,693.09x = 1,928,860.73 × 907,352.77
  4. Step 4: Simplify right side
    1,285,693.09x = 1,750,157,126,309.72
  5. Step 5: Solve for x
    x = 1,750,157,126,309.72/1,285,693.09
  6. Step 6: Final answer
    x = 1,361,255.76

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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.