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Finding the Fourth Proportional to 571,671.72, 858,021.53 and 305,659.62

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Solution

The fourth proportional to 571,671.72, 858,021.53 and 305,659.62 is: 458,764.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,671.72 : 858,021.53 = 305,659.62 : x
  2. Step 2: Convert to fraction form
    571,671.72/858,021.53 = 305,659.62/x
  3. Step 3: Cross multiply
    571,671.72x = 858,021.53 × 305,659.62
  4. Step 4: Simplify right side
    571,671.72x = 262,262,533,283.32
  5. Step 5: Solve for x
    x = 262,262,533,283.32/571,671.72
  6. Step 6: Final answer
    x = 458,764.22

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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.