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Finding the Fourth Proportional to 570,128.80, 854,847.60 and 285,488.32

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Solution

The fourth proportional to 570,128.80, 854,847.60 and 285,488.32 is: 428,059.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,128.80 : 854,847.60 = 285,488.32 : x
  2. Step 2: Convert to fraction form
    570,128.80/854,847.60 = 285,488.32/x
  3. Step 3: Cross multiply
    570,128.80x = 854,847.60 × 285,488.32
  4. Step 4: Simplify right side
    570,128.80x = 244,049,005,180.03
  5. Step 5: Solve for x
    x = 244,049,005,180.03/570,128.80
  6. Step 6: Final answer
    x = 428,059.42

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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.