Home / 990,865.35-1,367,348.49-561,148.61

Finding the Fourth Proportional to 990,865.35, 1,367,348.49 and 561,148.61

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Solution

The fourth proportional to 990,865.35, 1,367,348.49 and 561,148.61 is: 774,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,865.35 : 1,367,348.49 = 561,148.61 : x
  2. Step 2: Convert to fraction form
    990,865.35/1,367,348.49 = 561,148.61/x
  3. Step 3: Cross multiply
    990,865.35x = 1,367,348.49 × 561,148.61
  4. Step 4: Simplify right side
    990,865.35x = 767,285,697,712.36
  5. Step 5: Solve for x
    x = 767,285,697,712.36/990,865.35
  6. Step 6: Final answer
    x = 774,359.20

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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.