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Finding the Fourth Proportional to 1,968,721.20, 2,953,081.80 and 706,384.80

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Solution

The fourth proportional to 1,968,721.20, 2,953,081.80 and 706,384.80 is: 1,059,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968,721.20 : 2,953,081.80 = 706,384.80 : x
  2. Step 2: Convert to fraction form
    1,968,721.20/2,953,081.80 = 706,384.80/x
  3. Step 3: Cross multiply
    1,968,721.20x = 2,953,081.80 × 706,384.80
  4. Step 4: Simplify right side
    1,968,721.20x = 2,086,012,096,676.64
  5. Step 5: Solve for x
    x = 2,086,012,096,676.64/1,968,721.20
  6. Step 6: Final answer
    x = 1,059,577.20

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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.