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Finding the Fourth Proportional to 530,428.60, 794,768.10 and 455,195.80

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Solution

The fourth proportional to 530,428.60, 794,768.10 and 455,195.80 is: 682,042.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,428.60 : 794,768.10 = 455,195.80 : x
  2. Step 2: Convert to fraction form
    530,428.60/794,768.10 = 455,195.80/x
  3. Step 3: Cross multiply
    530,428.60x = 794,768.10 × 455,195.80
  4. Step 4: Simplify right side
    530,428.60x = 361,775,101,093.98
  5. Step 5: Solve for x
    x = 361,775,101,093.98/530,428.60
  6. Step 6: Final answer
    x = 682,042.98

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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.