Home / 678,282.40-1,017,884.40-378,762.40

Finding the Fourth Proportional to 678,282.40, 1,017,884.40 and 378,762.40

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Solution

The fourth proportional to 678,282.40, 1,017,884.40 and 378,762.40 is: 568,400.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,282.40 : 1,017,884.40 = 378,762.40 : x
  2. Step 2: Convert to fraction form
    678,282.40/1,017,884.40 = 378,762.40/x
  3. Step 3: Cross multiply
    678,282.40x = 1,017,884.40 × 378,762.40
  4. Step 4: Simplify right side
    678,282.40x = 385,536,338,266.56
  5. Step 5: Solve for x
    x = 385,536,338,266.56/678,282.40
  6. Step 6: Final answer
    x = 568,400.92

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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.