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Finding the Fourth Proportional to 612,408.92, 845,076.31 and 340,460.26

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Solution

The fourth proportional to 612,408.92, 845,076.31 and 340,460.26 is: 469,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,408.92 : 845,076.31 = 340,460.26 : x
  2. Step 2: Convert to fraction form
    612,408.92/845,076.31 = 340,460.26/x
  3. Step 3: Cross multiply
    612,408.92x = 845,076.31 × 340,460.26
  4. Step 4: Simplify right side
    612,408.92x = 287,714,897,258.60
  5. Step 5: Solve for x
    x = 287,714,897,258.60/612,408.92
  6. Step 6: Final answer
    x = 469,808.47

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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.