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Finding the Fourth Proportional to 1,369,941.84, 1,890,491.43 and 758,094.21

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Solution

The fourth proportional to 1,369,941.84, 1,890,491.43 and 758,094.21 is: 1,046,154.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,941.84 : 1,890,491.43 = 758,094.21 : x
  2. Step 2: Convert to fraction form
    1,369,941.84/1,890,491.43 = 758,094.21/x
  3. Step 3: Cross multiply
    1,369,941.84x = 1,890,491.43 × 758,094.21
  4. Step 4: Simplify right side
    1,369,941.84x = 1,433,170,607,137.62
  5. Step 5: Solve for x
    x = 1,433,170,607,137.62/1,369,941.84
  6. Step 6: Final answer
    x = 1,046,154.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.