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Finding the Fourth Proportional to 1,878,981, 2,818,463.94 and 680,622.90

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Solution

The fourth proportional to 1,878,981, 2,818,463.94 and 680,622.90 is: 1,020,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878,981 : 2,818,463.94 = 680,622.90 : x
  2. Step 2: Convert to fraction form
    1,878,981/2,818,463.94 = 680,622.90/x
  3. Step 3: Cross multiply
    1,878,981x = 2,818,463.94 × 680,622.90
  4. Step 4: Simplify right side
    1,878,981x = 1,918,311,100,388.23
  5. Step 5: Solve for x
    x = 1,918,311,100,388.23/1,878,981
  6. Step 6: Final answer
    x = 1,020,931.61

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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.