Home / 385,824.40-578,736.60-259,853.20

Finding the Fourth Proportional to 385,824.40, 578,736.60 and 259,853.20

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Solution

The fourth proportional to 385,824.40, 578,736.60 and 259,853.20 is: 389,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,824.40 : 578,736.60 = 259,853.20 : x
  2. Step 2: Convert to fraction form
    385,824.40/578,736.60 = 259,853.20/x
  3. Step 3: Cross multiply
    385,824.40x = 578,736.60 × 259,853.20
  4. Step 4: Simplify right side
    385,824.40x = 150,386,557,467.12
  5. Step 5: Solve for x
    x = 150,386,557,467.12/385,824.40
  6. Step 6: Final answer
    x = 389,779.80

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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.