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Finding the Fourth Proportional to 578,364.76, 798,160.26 and 323,709.40

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Solution

The fourth proportional to 578,364.76, 798,160.26 and 323,709.40 is: 446,728.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,364.76 : 798,160.26 = 323,709.40 : x
  2. Step 2: Convert to fraction form
    578,364.76/798,160.26 = 323,709.40/x
  3. Step 3: Cross multiply
    578,364.76x = 798,160.26 × 323,709.40
  4. Step 4: Simplify right side
    578,364.76x = 258,371,978,868.44
  5. Step 5: Solve for x
    x = 258,371,978,868.44/578,364.76
  6. Step 6: Final answer
    x = 446,728.43

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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.