Home / 1,405,384.40-1,939,431.11-760,804.58

Finding the Fourth Proportional to 1,405,384.40, 1,939,431.11 and 760,804.58

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Solution

The fourth proportional to 1,405,384.40, 1,939,431.11 and 760,804.58 is: 1,049,910.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,384.40 : 1,939,431.11 = 760,804.58 : x
  2. Step 2: Convert to fraction form
    1,405,384.40/1,939,431.11 = 760,804.58/x
  3. Step 3: Cross multiply
    1,405,384.40x = 1,939,431.11 × 760,804.58
  4. Step 4: Simplify right side
    1,405,384.40x = 1,475,528,072,127.04
  5. Step 5: Solve for x
    x = 1,475,528,072,127.04/1,405,384.40
  6. Step 6: Final answer
    x = 1,049,910.66

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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.