Home / 990,786.72-1,367,285.61-561,149.89

Finding the Fourth Proportional to 990,786.72, 1,367,285.61 and 561,149.89

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Solution

The fourth proportional to 990,786.72, 1,367,285.61 and 561,149.89 is: 774,386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,786.72 : 1,367,285.61 = 561,149.89 : x
  2. Step 2: Convert to fraction form
    990,786.72/1,367,285.61 = 561,149.89/x
  3. Step 3: Cross multiply
    990,786.72x = 1,367,285.61 × 561,149.89
  4. Step 4: Simplify right side
    990,786.72x = 767,252,169,650.08
  5. Step 5: Solve for x
    x = 767,252,169,650.08/990,786.72
  6. Step 6: Final answer
    x = 774,386.82

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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.