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Finding the Fourth Proportional to 619,312.95, 854,659.05 and 343,676.55

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Solution

The fourth proportional to 619,312.95, 854,659.05 and 343,676.55 is: 474,277.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,312.95 : 854,659.05 = 343,676.55 : x
  2. Step 2: Convert to fraction form
    619,312.95/854,659.05 = 343,676.55/x
  3. Step 3: Cross multiply
    619,312.95x = 854,659.05 × 343,676.55
  4. Step 4: Simplify right side
    619,312.95x = 293,726,273,730.28
  5. Step 5: Solve for x
    x = 293,726,273,730.28/619,312.95
  6. Step 6: Final answer
    x = 474,277.62

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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.