Home / 1,405,389.42-1,939,436.94-760,809.12

Finding the Fourth Proportional to 1,405,389.42, 1,939,436.94 and 760,809.12

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Solution

The fourth proportional to 1,405,389.42, 1,939,436.94 and 760,809.12 is: 1,049,916.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,389.42 : 1,939,436.94 = 760,809.12 : x
  2. Step 2: Convert to fraction form
    1,405,389.42/1,939,436.94 = 760,809.12/x
  3. Step 3: Cross multiply
    1,405,389.42x = 1,939,436.94 × 760,809.12
  4. Step 4: Simplify right side
    1,405,389.42x = 1,475,541,311,616.89
  5. Step 5: Solve for x
    x = 1,475,541,311,616.89/1,405,389.42
  6. Step 6: Final answer
    x = 1,049,916.34

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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.