Home / 678,343.79-1,017,538.54-341,200.63

Finding the Fourth Proportional to 678,343.79, 1,017,538.54 and 341,200.63

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Solution

The fourth proportional to 678,343.79, 1,017,538.54 and 341,200.63 is: 511,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,343.79 : 1,017,538.54 = 341,200.63 : x
  2. Step 2: Convert to fraction form
    678,343.79/1,017,538.54 = 341,200.63/x
  3. Step 3: Cross multiply
    678,343.79x = 1,017,538.54 × 341,200.63
  4. Step 4: Simplify right side
    678,343.79x = 347,184,784,103.58
  5. Step 5: Solve for x
    x = 347,184,784,103.58/678,343.79
  6. Step 6: Final answer
    x = 511,812.43

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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.