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Finding the Fourth Proportional to 626,767.64, 864,960.04 and 354,830

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Solution

The fourth proportional to 626,767.64, 864,960.04 and 354,830 is: 489,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,767.64 : 864,960.04 = 354,830 : x
  2. Step 2: Convert to fraction form
    626,767.64/864,960.04 = 354,830/x
  3. Step 3: Cross multiply
    626,767.64x = 864,960.04 × 354,830
  4. Step 4: Simplify right side
    626,767.64x = 306,913,770,993.20
  5. Step 5: Solve for x
    x = 306,913,770,993.20/626,767.64
  6. Step 6: Final answer
    x = 489,677.12

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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.