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Finding the Fourth Proportional to 777,846, 1,073,522.52 and 438,376.08

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Solution

The fourth proportional to 777,846, 1,073,522.52 and 438,376.08 is: 605,012.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,846 : 1,073,522.52 = 438,376.08 : x
  2. Step 2: Convert to fraction form
    777,846/1,073,522.52 = 438,376.08/x
  3. Step 3: Cross multiply
    777,846x = 1,073,522.52 × 438,376.08
  4. Step 4: Simplify right side
    777,846x = 470,606,594,109.32
  5. Step 5: Solve for x
    x = 470,606,594,109.32/777,846
  6. Step 6: Final answer
    x = 605,012.55

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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.