Home / 1,116,768.09-1,670,924.88-661,603.68

Finding the Fourth Proportional to 1,116,768.09, 1,670,924.88 and 661,603.68

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Solution

The fourth proportional to 1,116,768.09, 1,670,924.88 and 661,603.68 is: 989,901.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116,768.09 : 1,670,924.88 = 661,603.68 : x
  2. Step 2: Convert to fraction form
    1,116,768.09/1,670,924.88 = 661,603.68/x
  3. Step 3: Cross multiply
    1,116,768.09x = 1,670,924.88 × 661,603.68
  4. Step 4: Simplify right side
    1,116,768.09x = 1,105,490,049,611.56
  5. Step 5: Solve for x
    x = 1,105,490,049,611.56/1,116,768.09
  6. Step 6: Final answer
    x = 989,901.18

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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.