Home / 1,189,821.68-1,785,387.36-515,908.16

Finding the Fourth Proportional to 1,189,821.68, 1,785,387.36 and 515,908.16

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Solution

The fourth proportional to 1,189,821.68, 1,785,387.36 and 515,908.16 is: 774,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,821.68 : 1,785,387.36 = 515,908.16 : x
  2. Step 2: Convert to fraction form
    1,189,821.68/1,785,387.36 = 515,908.16/x
  3. Step 3: Cross multiply
    1,189,821.68x = 1,785,387.36 × 515,908.16
  4. Step 4: Simplify right side
    1,189,821.68x = 921,095,907,784.86
  5. Step 5: Solve for x
    x = 921,095,907,784.86/1,189,821.68
  6. Step 6: Final answer
    x = 774,146.18

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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.