Home / 990,786.47-1,367,285.27-561,149.64

Finding the Fourth Proportional to 990,786.47, 1,367,285.27 and 561,149.64

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Solution

The fourth proportional to 990,786.47, 1,367,285.27 and 561,149.64 is: 774,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,786.47 : 1,367,285.27 = 561,149.64 : x
  2. Step 2: Convert to fraction form
    990,786.47/1,367,285.27 = 561,149.64/x
  3. Step 3: Cross multiply
    990,786.47x = 1,367,285.27 × 561,149.64
  4. Step 4: Simplify right side
    990,786.47x = 767,251,634,232.06
  5. Step 5: Solve for x
    x = 767,251,634,232.06/990,786.47
  6. Step 6: Final answer
    x = 774,386.47

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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.