Home / 678,260.40-1,017,851.40-378,740.40

Finding the Fourth Proportional to 678,260.40, 1,017,851.40 and 378,740.40

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Solution

The fourth proportional to 678,260.40, 1,017,851.40 and 378,740.40 is: 568,367.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,260.40 : 1,017,851.40 = 378,740.40 : x
  2. Step 2: Convert to fraction form
    678,260.40/1,017,851.40 = 378,740.40/x
  3. Step 3: Cross multiply
    678,260.40x = 1,017,851.40 × 378,740.40
  4. Step 4: Simplify right side
    678,260.40x = 385,501,446,376.56
  5. Step 5: Solve for x
    x = 385,501,446,376.56/678,260.40
  6. Step 6: Final answer
    x = 568,367.91

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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.