Home / 1,405,891.89-1,940,131.85-761,312.79

Finding the Fourth Proportional to 1,405,891.89, 1,940,131.85 and 761,312.79

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Solution

The fourth proportional to 1,405,891.89, 1,940,131.85 and 761,312.79 is: 1,050,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,891.89 : 1,940,131.85 = 761,312.79 : x
  2. Step 2: Convert to fraction form
    1,405,891.89/1,940,131.85 = 761,312.79/x
  3. Step 3: Cross multiply
    1,405,891.89x = 1,940,131.85 × 761,312.79
  4. Step 4: Simplify right side
    1,405,891.89x = 1,477,047,187,884.80
  5. Step 5: Solve for x
    x = 1,477,047,187,884.80/1,405,891.89
  6. Step 6: Final answer
    x = 1,050,612.21

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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.