Home / 1,290,920.90-1,932,596.01-905,333.36

Finding the Fourth Proportional to 1,290,920.90, 1,932,596.01 and 905,333.36

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Solution

The fourth proportional to 1,290,920.90, 1,932,596.01 and 905,333.36 is: 1,355,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,920.90 : 1,932,596.01 = 905,333.36 : x
  2. Step 2: Convert to fraction form
    1,290,920.90/1,932,596.01 = 905,333.36/x
  3. Step 3: Cross multiply
    1,290,920.90x = 1,932,596.01 × 905,333.36
  4. Step 4: Simplify right side
    1,290,920.90x = 1,749,643,629,592.91
  5. Step 5: Solve for x
    x = 1,749,643,629,592.91/1,290,920.90
  6. Step 6: Final answer
    x = 1,355,345.35

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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.