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Finding the Fourth Proportional to 627,255.90, 865,608.53 and 340,778.34

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Solution

The fourth proportional to 627,255.90, 865,608.53 and 340,778.34 is: 470,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,255.90 : 865,608.53 = 340,778.34 : x
  2. Step 2: Convert to fraction form
    627,255.90/865,608.53 = 340,778.34/x
  3. Step 3: Cross multiply
    627,255.90x = 865,608.53 × 340,778.34
  4. Step 4: Simplify right side
    627,255.90x = 294,980,636,239.35
  5. Step 5: Solve for x
    x = 294,980,636,239.35/627,255.90
  6. Step 6: Final answer
    x = 470,271.60

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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.