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Finding the Fourth Proportional to 612,071.46, 844,659 and 340,164.66

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Solution

The fourth proportional to 612,071.46, 844,659 and 340,164.66 is: 469,427.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,071.46 : 844,659 = 340,164.66 : x
  2. Step 2: Convert to fraction form
    612,071.46/844,659 = 340,164.66/x
  3. Step 3: Cross multiply
    612,071.46x = 844,659 × 340,164.66
  4. Step 4: Simplify right side
    612,071.46x = 287,323,141,550.94
  5. Step 5: Solve for x
    x = 287,323,141,550.94/612,071.46
  6. Step 6: Final answer
    x = 469,427.44

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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.