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Finding the Fourth Proportional to 455,963.40, 683,945.10 and 367,389.90

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Solution

The fourth proportional to 455,963.40, 683,945.10 and 367,389.90 is: 551,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,963.40 : 683,945.10 = 367,389.90 : x
  2. Step 2: Convert to fraction form
    455,963.40/683,945.10 = 367,389.90/x
  3. Step 3: Cross multiply
    455,963.40x = 683,945.10 × 367,389.90
  4. Step 4: Simplify right side
    455,963.40x = 251,274,521,894.49
  5. Step 5: Solve for x
    x = 251,274,521,894.49/455,963.40
  6. Step 6: Final answer
    x = 551,084.85

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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.