Home / 1,405,380.60-1,939,424.81-760,800.31

Finding the Fourth Proportional to 1,405,380.60, 1,939,424.81 and 760,800.31

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Solution

The fourth proportional to 1,405,380.60, 1,939,424.81 and 760,800.31 is: 1,049,904.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,380.60 : 1,939,424.81 = 760,800.31 : x
  2. Step 2: Convert to fraction form
    1,405,380.60/1,939,424.81 = 760,800.31/x
  3. Step 3: Cross multiply
    1,405,380.60x = 1,939,424.81 × 760,800.31
  4. Step 4: Simplify right side
    1,405,380.60x = 1,475,514,996,669.69
  5. Step 5: Solve for x
    x = 1,475,514,996,669.69/1,405,380.60
  6. Step 6: Final answer
    x = 1,049,904.21

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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.