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Finding the Fourth Proportional to 1,888,741.68, 2,833,949.10 and 989,969.76

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Solution

The fourth proportional to 1,888,741.68, 2,833,949.10 and 989,969.76 is: 1,485,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,741.68 : 2,833,949.10 = 989,969.76 : x
  2. Step 2: Convert to fraction form
    1,888,741.68/2,833,949.10 = 989,969.76/x
  3. Step 3: Cross multiply
    1,888,741.68x = 2,833,949.10 × 989,969.76
  4. Step 4: Simplify right side
    1,888,741.68x = 2,805,523,910,379.22
  5. Step 5: Solve for x
    x = 2,805,523,910,379.22/1,888,741.68
  6. Step 6: Final answer
    x = 1,485,393.13

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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.