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Finding the Fourth Proportional to 570,428.14, 855,365.34 and 285,996.52

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Solution

The fourth proportional to 570,428.14, 855,365.34 and 285,996.52 is: 428,855.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,428.14 : 855,365.34 = 285,996.52 : x
  2. Step 2: Convert to fraction form
    570,428.14/855,365.34 = 285,996.52/x
  3. Step 3: Cross multiply
    570,428.14x = 855,365.34 × 285,996.52
  4. Step 4: Simplify right side
    570,428.14x = 244,631,510,568.62
  5. Step 5: Solve for x
    x = 244,631,510,568.62/570,428.14
  6. Step 6: Final answer
    x = 428,855.97

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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.