Home / 678,804.72-1,013,244.78-629,464.56

Finding the Fourth Proportional to 678,804.72, 1,013,244.78 and 629,464.56

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Solution

The fourth proportional to 678,804.72, 1,013,244.78 and 629,464.56 is: 939,595.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,804.72 : 1,013,244.78 = 629,464.56 : x
  2. Step 2: Convert to fraction form
    678,804.72/1,013,244.78 = 629,464.56/x
  3. Step 3: Cross multiply
    678,804.72x = 1,013,244.78 × 629,464.56
  4. Step 4: Simplify right side
    678,804.72x = 637,801,679,615.00
  5. Step 5: Solve for x
    x = 637,801,679,615.00/678,804.72
  6. Step 6: Final answer
    x = 939,595.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.