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Finding the Fourth Proportional to 612,091.94, 844,670 and 340,152.88

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Solution

The fourth proportional to 612,091.94, 844,670 and 340,152.88 is: 469,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,091.94 : 844,670 = 340,152.88 : x
  2. Step 2: Convert to fraction form
    612,091.94/844,670 = 340,152.88/x
  3. Step 3: Cross multiply
    612,091.94x = 844,670 × 340,152.88
  4. Step 4: Simplify right side
    612,091.94x = 287,316,933,149.60
  5. Step 5: Solve for x
    x = 287,316,933,149.60/612,091.94
  6. Step 6: Final answer
    x = 469,401.60

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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.