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Finding the Fourth Proportional to 1,296,809.32, 1,789,895.46 and 760,438.12

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Solution

The fourth proportional to 1,296,809.32, 1,789,895.46 and 760,438.12 is: 1,049,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,809.32 : 1,789,895.46 = 760,438.12 : x
  2. Step 2: Convert to fraction form
    1,296,809.32/1,789,895.46 = 760,438.12/x
  3. Step 3: Cross multiply
    1,296,809.32x = 1,789,895.46 × 760,438.12
  4. Step 4: Simplify right side
    1,296,809.32x = 1,361,104,738,598.94
  5. Step 5: Solve for x
    x = 1,361,104,738,598.94/1,296,809.32
  6. Step 6: Final answer
    x = 1,049,579.70

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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.