Home / 1,405,219.89-1,939,208.28-760,639.89

Finding the Fourth Proportional to 1,405,219.89, 1,939,208.28 and 760,639.89

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Solution

The fourth proportional to 1,405,219.89, 1,939,208.28 and 760,639.89 is: 1,049,685.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,219.89 : 1,939,208.28 = 760,639.89 : x
  2. Step 2: Convert to fraction form
    1,405,219.89/1,939,208.28 = 760,639.89/x
  3. Step 3: Cross multiply
    1,405,219.89x = 1,939,208.28 × 760,639.89
  4. Step 4: Simplify right side
    1,405,219.89x = 1,475,039,172,786.29
  5. Step 5: Solve for x
    x = 1,475,039,172,786.29/1,405,219.89
  6. Step 6: Final answer
    x = 1,049,685.66

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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.