Home / 1,189,820.68-1,785,385.86-515,907.16

Finding the Fourth Proportional to 1,189,820.68, 1,785,385.86 and 515,907.16

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Solution

The fourth proportional to 1,189,820.68, 1,785,385.86 and 515,907.16 is: 774,144.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,820.68 : 1,785,385.86 = 515,907.16 : x
  2. Step 2: Convert to fraction form
    1,189,820.68/1,785,385.86 = 515,907.16/x
  3. Step 3: Cross multiply
    1,189,820.68x = 1,785,385.86 × 515,907.16
  4. Step 4: Simplify right side
    1,189,820.68x = 921,093,348,536.76
  5. Step 5: Solve for x
    x = 921,093,348,536.76/1,189,820.68
  6. Step 6: Final answer
    x = 774,144.68

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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.