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Finding the Fourth Proportional to 571,496.61, 855,563.23 and 381,485.67

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Solution

The fourth proportional to 571,496.61, 855,563.23 and 381,485.67 is: 571,105.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,496.61 : 855,563.23 = 381,485.67 : x
  2. Step 2: Convert to fraction form
    571,496.61/855,563.23 = 381,485.67/x
  3. Step 3: Cross multiply
    571,496.61x = 855,563.23 × 381,485.67
  4. Step 4: Simplify right side
    571,496.61x = 326,385,111,070.20
  5. Step 5: Solve for x
    x = 326,385,111,070.20/571,496.61
  6. Step 6: Final answer
    x = 571,105.94

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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.