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Finding the Fourth Proportional to 612,080.79, 844,604.40 and 353,918.67

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Solution

The fourth proportional to 612,080.79, 844,604.40 and 353,918.67 is: 488,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,080.79 : 844,604.40 = 353,918.67 : x
  2. Step 2: Convert to fraction form
    612,080.79/844,604.40 = 353,918.67/x
  3. Step 3: Cross multiply
    612,080.79x = 844,604.40 × 353,918.67
  4. Step 4: Simplify right side
    612,080.79x = 298,921,261,701.13
  5. Step 5: Solve for x
    x = 298,921,261,701.13/612,080.79
  6. Step 6: Final answer
    x = 488,368.97

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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.