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Finding the Fourth Proportional to 612,416.88, 845,163.42 and 340,512.69

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Solution

The fourth proportional to 612,416.88, 845,163.42 and 340,512.69 is: 469,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,416.88 : 845,163.42 = 340,512.69 : x
  2. Step 2: Convert to fraction form
    612,416.88/845,163.42 = 340,512.69/x
  3. Step 3: Cross multiply
    612,416.88x = 845,163.42 × 340,512.69
  4. Step 4: Simplify right side
    612,416.88x = 287,788,869,633.80
  5. Step 5: Solve for x
    x = 287,788,869,633.80/612,416.88
  6. Step 6: Final answer
    x = 469,923.15

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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.