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Finding the Fourth Proportional to 1,992,402, 2,988,603 and 662,706

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Solution

The fourth proportional to 1,992,402, 2,988,603 and 662,706 is: 994,059

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,402 : 2,988,603 = 662,706 : x
  2. Step 2: Convert to fraction form
    1,992,402/2,988,603 = 662,706/x
  3. Step 3: Cross multiply
    1,992,402x = 2,988,603 × 662,706
  4. Step 4: Simplify right side
    1,992,402x = 1,980,565,139,718
  5. Step 5: Solve for x
    x = 1,980,565,139,718/1,992,402
  6. Step 6: Final answer
    x = 994,059

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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.