Home / 874,905.20-1,312,357.80-313,866.80

Finding the Fourth Proportional to 874,905.20, 1,312,357.80 and 313,866.80

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Solution

The fourth proportional to 874,905.20, 1,312,357.80 and 313,866.80 is: 470,800.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,905.20 : 1,312,357.80 = 313,866.80 : x
  2. Step 2: Convert to fraction form
    874,905.20/1,312,357.80 = 313,866.80/x
  3. Step 3: Cross multiply
    874,905.20x = 1,312,357.80 × 313,866.80
  4. Step 4: Simplify right side
    874,905.20x = 411,905,543,141.04
  5. Step 5: Solve for x
    x = 411,905,543,141.04/874,905.20
  6. Step 6: Final answer
    x = 470,800.20

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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.