Home / 874,734.51-1,312,516.49-520,448.43

Finding the Fourth Proportional to 874,734.51, 1,312,516.49 and 520,448.43

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Solution

The fourth proportional to 874,734.51, 1,312,516.49 and 520,448.43 is: 780,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,734.51 : 1,312,516.49 = 520,448.43 : x
  2. Step 2: Convert to fraction form
    874,734.51/1,312,516.49 = 520,448.43/x
  3. Step 3: Cross multiply
    874,734.51x = 1,312,516.49 × 520,448.43
  4. Step 4: Simplify right side
    874,734.51x = 683,097,143,967.37
  5. Step 5: Solve for x
    x = 683,097,143,967.37/874,734.51
  6. Step 6: Final answer
    x = 780,919.39

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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.