Home / 1,189,821.18-1,785,386.61-515,907.66

Finding the Fourth Proportional to 1,189,821.18, 1,785,386.61 and 515,907.66

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Solution

The fourth proportional to 1,189,821.18, 1,785,386.61 and 515,907.66 is: 774,145.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,821.18 : 1,785,386.61 = 515,907.66 : x
  2. Step 2: Convert to fraction form
    1,189,821.18/1,785,386.61 = 515,907.66/x
  3. Step 3: Cross multiply
    1,189,821.18x = 1,785,386.61 × 515,907.66
  4. Step 4: Simplify right side
    1,189,821.18x = 921,094,628,160.43
  5. Step 5: Solve for x
    x = 921,094,628,160.43/1,189,821.18
  6. Step 6: Final answer
    x = 774,145.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.