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Finding the Fourth Proportional to 571,024.60, 856,536.90 and 305,603.80

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Solution

The fourth proportional to 571,024.60, 856,536.90 and 305,603.80 is: 458,405.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,024.60 : 856,536.90 = 305,603.80 : x
  2. Step 2: Convert to fraction form
    571,024.60/856,536.90 = 305,603.80/x
  3. Step 3: Cross multiply
    571,024.60x = 856,536.90 × 305,603.80
  4. Step 4: Simplify right side
    571,024.60x = 261,760,931,480.22
  5. Step 5: Solve for x
    x = 261,760,931,480.22/571,024.60
  6. Step 6: Final answer
    x = 458,405.70

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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.