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Finding the Fourth Proportional to 536,622.78, 803,605.55 and 394,130.16

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Solution

The fourth proportional to 536,622.78, 803,605.55 and 394,130.16 is: 590,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,622.78 : 803,605.55 = 394,130.16 : x
  2. Step 2: Convert to fraction form
    536,622.78/803,605.55 = 394,130.16/x
  3. Step 3: Cross multiply
    536,622.78x = 803,605.55 × 394,130.16
  4. Step 4: Simplify right side
    536,622.78x = 316,725,183,998.39
  5. Step 5: Solve for x
    x = 316,725,183,998.39/536,622.78
  6. Step 6: Final answer
    x = 590,219.42

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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.