Home / 990,881.72-1,367,370.98-561,164.94

Finding the Fourth Proportional to 990,881.72, 1,367,370.98 and 561,164.94

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Solution

The fourth proportional to 990,881.72, 1,367,370.98 and 561,164.94 is: 774,381.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,881.72 : 1,367,370.98 = 561,164.94 : x
  2. Step 2: Convert to fraction form
    990,881.72/1,367,370.98 = 561,164.94/x
  3. Step 3: Cross multiply
    990,881.72x = 1,367,370.98 × 561,164.94
  4. Step 4: Simplify right side
    990,881.72x = 767,320,653,949.44
  5. Step 5: Solve for x
    x = 767,320,653,949.44/990,881.72
  6. Step 6: Final answer
    x = 774,381.68

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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.