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Finding the Fourth Proportional to 626,773.64, 864,968.32 and 354,836

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Solution

The fourth proportional to 626,773.64, 864,968.32 and 354,836 is: 489,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,773.64 : 864,968.32 = 354,836 : x
  2. Step 2: Convert to fraction form
    626,773.64/864,968.32 = 354,836/x
  3. Step 3: Cross multiply
    626,773.64x = 864,968.32 × 354,836
  4. Step 4: Simplify right side
    626,773.64x = 306,921,898,795.52
  5. Step 5: Solve for x
    x = 306,921,898,795.52/626,773.64
  6. Step 6: Final answer
    x = 489,685.40

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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.