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Finding the Fourth Proportional to 1,938,994.68, 2,909,820.66 and 676,822.20

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Solution

The fourth proportional to 1,938,994.68, 2,909,820.66 and 676,822.20 is: 1,015,697.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938,994.68 : 2,909,820.66 = 676,822.20 : x
  2. Step 2: Convert to fraction form
    1,938,994.68/2,909,820.66 = 676,822.20/x
  3. Step 3: Cross multiply
    1,938,994.68x = 2,909,820.66 × 676,822.20
  4. Step 4: Simplify right side
    1,938,994.68x = 1,969,431,220,706.65
  5. Step 5: Solve for x
    x = 1,969,431,220,706.65/1,938,994.68
  6. Step 6: Final answer
    x = 1,015,697.07

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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.