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Finding the Fourth Proportional to 627,085.92, 865,384.92 and 340,611.60

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Solution

The fourth proportional to 627,085.92, 865,384.92 and 340,611.60 is: 470,047.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,085.92 : 865,384.92 = 340,611.60 : x
  2. Step 2: Convert to fraction form
    627,085.92/865,384.92 = 340,611.60/x
  3. Step 3: Cross multiply
    627,085.92x = 865,384.92 × 340,611.60
  4. Step 4: Simplify right side
    627,085.92x = 294,760,142,217.07
  5. Step 5: Solve for x
    x = 294,760,142,217.07/627,085.92
  6. Step 6: Final answer
    x = 470,047.46

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1.5x scale

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.