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Finding the Fourth Proportional to 626,013.42, 863,918.07 and 354,076

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Solution

The fourth proportional to 626,013.42, 863,918.07 and 354,076 is: 488,635.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,013.42 : 863,918.07 = 354,076 : x
  2. Step 2: Convert to fraction form
    626,013.42/863,918.07 = 354,076/x
  3. Step 3: Cross multiply
    626,013.42x = 863,918.07 × 354,076
  4. Step 4: Simplify right side
    626,013.42x = 305,892,654,553.32
  5. Step 5: Solve for x
    x = 305,892,654,553.32/626,013.42
  6. Step 6: Final answer
    x = 488,635.94

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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.