Home / 1,405,386.40-1,939,433.86-760,806.58

Finding the Fourth Proportional to 1,405,386.40, 1,939,433.86 and 760,806.58

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Solution

The fourth proportional to 1,405,386.40, 1,939,433.86 and 760,806.58 is: 1,049,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,386.40 : 1,939,433.86 = 760,806.58 : x
  2. Step 2: Convert to fraction form
    1,405,386.40/1,939,433.86 = 760,806.58/x
  3. Step 3: Cross multiply
    1,405,386.40x = 1,939,433.86 × 760,806.58
  4. Step 4: Simplify right side
    1,405,386.40x = 1,475,534,042,162.80
  5. Step 5: Solve for x
    x = 1,475,534,042,162.80/1,405,386.40
  6. Step 6: Final answer
    x = 1,049,913.42

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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.