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Finding the Fourth Proportional to 612,392.46, 845,100.44 and 340,485.46

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Solution

The fourth proportional to 612,392.46, 845,100.44 and 340,485.46 is: 469,869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,392.46 : 845,100.44 = 340,485.46 : x
  2. Step 2: Convert to fraction form
    612,392.46/845,100.44 = 340,485.46/x
  3. Step 3: Cross multiply
    612,392.46x = 845,100.44 × 340,485.46
  4. Step 4: Simplify right side
    612,392.46x = 287,744,412,059.60
  5. Step 5: Solve for x
    x = 287,744,412,059.60/612,392.46
  6. Step 6: Final answer
    x = 469,869.29

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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.