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Finding the Fourth Proportional to 848,187, 1,170,511.50 and 485,609.40

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Solution

The fourth proportional to 848,187, 1,170,511.50 and 485,609.40 is: 670,148.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,187 : 1,170,511.50 = 485,609.40 : x
  2. Step 2: Convert to fraction form
    848,187/1,170,511.50 = 485,609.40/x
  3. Step 3: Cross multiply
    848,187x = 1,170,511.50 × 485,609.40
  4. Step 4: Simplify right side
    848,187x = 568,411,387,208.10
  5. Step 5: Solve for x
    x = 568,411,387,208.10/848,187
  6. Step 6: Final answer
    x = 670,148.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.