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Finding the Fourth Proportional to 570,009.20, 854,581.80 and 289,727.60

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Solution

The fourth proportional to 570,009.20, 854,581.80 and 289,727.60 is: 434,371.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,009.20 : 854,581.80 = 289,727.60 : x
  2. Step 2: Convert to fraction form
    570,009.20/854,581.80 = 289,727.60/x
  3. Step 3: Cross multiply
    570,009.20x = 854,581.80 × 289,727.60
  4. Step 4: Simplify right side
    570,009.20x = 247,595,933,917.68
  5. Step 5: Solve for x
    x = 247,595,933,917.68/570,009.20
  6. Step 6: Final answer
    x = 434,371.82

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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.