Home / 642,928.40-964,269.75-322,991.44

Finding the Fourth Proportional to 642,928.40, 964,269.75 and 322,991.44

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Solution

The fourth proportional to 642,928.40, 964,269.75 and 322,991.44 is: 484,425.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,928.40 : 964,269.75 = 322,991.44 : x
  2. Step 2: Convert to fraction form
    642,928.40/964,269.75 = 322,991.44/x
  3. Step 3: Cross multiply
    642,928.40x = 964,269.75 × 322,991.44
  4. Step 4: Simplify right side
    642,928.40x = 311,450,880,340.86
  5. Step 5: Solve for x
    x = 311,450,880,340.86/642,928.40
  6. Step 6: Final answer
    x = 484,425.45

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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.