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Finding the Fourth Proportional to 574,245.90, 860,406.57 and 405,486.05

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Solution

The fourth proportional to 574,245.90, 860,406.57 and 405,486.05 is: 607,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,245.90 : 860,406.57 = 405,486.05 : x
  2. Step 2: Convert to fraction form
    574,245.90/860,406.57 = 405,486.05/x
  3. Step 3: Cross multiply
    574,245.90x = 860,406.57 × 405,486.05
  4. Step 4: Simplify right side
    574,245.90x = 348,882,857,161.32
  5. Step 5: Solve for x
    x = 348,882,857,161.32/574,245.90
  6. Step 6: Final answer
    x = 607,549.58

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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.