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Finding the Fourth Proportional to 1,888,743.68, 2,833,952.10 and 989,971.76

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Solution

The fourth proportional to 1,888,743.68, 2,833,952.10 and 989,971.76 is: 1,485,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,743.68 : 2,833,952.10 = 989,971.76 : x
  2. Step 2: Convert to fraction form
    1,888,743.68/2,833,952.10 = 989,971.76/x
  3. Step 3: Cross multiply
    1,888,743.68x = 2,833,952.10 × 989,971.76
  4. Step 4: Simplify right side
    1,888,743.68x = 2,805,532,548,192.70
  5. Step 5: Solve for x
    x = 2,805,532,548,192.70/1,888,743.68
  6. Step 6: Final answer
    x = 1,485,396.13

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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.