Home / 1,405,388.78-1,939,437.16-760,808.98

Finding the Fourth Proportional to 1,405,388.78, 1,939,437.16 and 760,808.98

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Solution

The fourth proportional to 1,405,388.78, 1,939,437.16 and 760,808.98 is: 1,049,916.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,388.78 : 1,939,437.16 = 760,808.98 : x
  2. Step 2: Convert to fraction form
    1,405,388.78/1,939,437.16 = 760,808.98/x
  3. Step 3: Cross multiply
    1,405,388.78x = 1,939,437.16 × 760,808.98
  4. Step 4: Simplify right side
    1,405,388.78x = 1,475,541,207,473.70
  5. Step 5: Solve for x
    x = 1,475,541,207,473.70/1,405,388.78
  6. Step 6: Final answer
    x = 1,049,916.74

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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.