Home / 874,477.20-1,311,715.80-313,568.40

Finding the Fourth Proportional to 874,477.20, 1,311,715.80 and 313,568.40

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Solution

The fourth proportional to 874,477.20, 1,311,715.80 and 313,568.40 is: 470,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,477.20 : 1,311,715.80 = 313,568.40 : x
  2. Step 2: Convert to fraction form
    874,477.20/1,311,715.80 = 313,568.40/x
  3. Step 3: Cross multiply
    874,477.20x = 1,311,715.80 × 313,568.40
  4. Step 4: Simplify right side
    874,477.20x = 411,312,624,660.72
  5. Step 5: Solve for x
    x = 411,312,624,660.72/874,477.20
  6. Step 6: Final answer
    x = 470,352.60

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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.