Home / 678,334.40-1,017,962.40-378,814.40

Finding the Fourth Proportional to 678,334.40, 1,017,962.40 and 378,814.40

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Solution

The fourth proportional to 678,334.40, 1,017,962.40 and 378,814.40 is: 568,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,334.40 : 1,017,962.40 = 378,814.40 : x
  2. Step 2: Convert to fraction form
    678,334.40/1,017,962.40 = 378,814.40/x
  3. Step 3: Cross multiply
    678,334.40x = 1,017,962.40 × 378,814.40
  4. Step 4: Simplify right side
    678,334.40x = 385,618,815,778.56
  5. Step 5: Solve for x
    x = 385,618,815,778.56/678,334.40
  6. Step 6: Final answer
    x = 568,478.93

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1.5x scale

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.