Home / 874,657.20-1,311,985.80-313,618.80

Finding the Fourth Proportional to 874,657.20, 1,311,985.80 and 313,618.80

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Solution

The fourth proportional to 874,657.20, 1,311,985.80 and 313,618.80 is: 470,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,657.20 : 1,311,985.80 = 313,618.80 : x
  2. Step 2: Convert to fraction form
    874,657.20/1,311,985.80 = 313,618.80/x
  3. Step 3: Cross multiply
    874,657.20x = 1,311,985.80 × 313,618.80
  4. Step 4: Simplify right side
    874,657.20x = 411,463,412,213.04
  5. Step 5: Solve for x
    x = 411,463,412,213.04/874,657.20
  6. Step 6: Final answer
    x = 470,428.20

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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.