Home / 874,540.20-1,312,040.70-313,516.20

Finding the Fourth Proportional to 874,540.20, 1,312,040.70 and 313,516.20

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Solution

The fourth proportional to 874,540.20, 1,312,040.70 and 313,516.20 is: 470,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,540.20 : 1,312,040.70 = 313,516.20 : x
  2. Step 2: Convert to fraction form
    874,540.20/1,312,040.70 = 313,516.20/x
  3. Step 3: Cross multiply
    874,540.20x = 1,312,040.70 × 313,516.20
  4. Step 4: Simplify right side
    874,540.20x = 411,346,014,509.34
  5. Step 5: Solve for x
    x = 411,346,014,509.34/874,540.20
  6. Step 6: Final answer
    x = 470,356.90

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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.