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Finding the Fourth Proportional to 1,040,072, 1,435,299.36 and 563,144

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Solution

The fourth proportional to 1,040,072, 1,435,299.36 and 563,144 is: 777,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,072 : 1,435,299.36 = 563,144 : x
  2. Step 2: Convert to fraction form
    1,040,072/1,435,299.36 = 563,144/x
  3. Step 3: Cross multiply
    1,040,072x = 1,435,299.36 × 563,144
  4. Step 4: Simplify right side
    1,040,072x = 808,280,222,787.84
  5. Step 5: Solve for x
    x = 808,280,222,787.84/1,040,072
  6. Step 6: Final answer
    x = 777,138.72

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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.