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Finding the Fourth Proportional to 510,787.88, 764,968.01 and 257,270.84

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Solution

The fourth proportional to 510,787.88, 764,968.01 and 257,270.84 is: 385,294.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,787.88 : 764,968.01 = 257,270.84 : x
  2. Step 2: Convert to fraction form
    510,787.88/764,968.01 = 257,270.84/x
  3. Step 3: Cross multiply
    510,787.88x = 764,968.01 × 257,270.84
  4. Step 4: Simplify right side
    510,787.88x = 196,803,963,131.89
  5. Step 5: Solve for x
    x = 196,803,963,131.89/510,787.88
  6. Step 6: Final answer
    x = 385,294.89

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1.5x scale

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.