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Finding the Fourth Proportional to 707,423.88, 976,893.38 and 449,384

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Solution

The fourth proportional to 707,423.88, 976,893.38 and 449,384 is: 620,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,423.88 : 976,893.38 = 449,384 : x
  2. Step 2: Convert to fraction form
    707,423.88/976,893.38 = 449,384/x
  3. Step 3: Cross multiply
    707,423.88x = 976,893.38 × 449,384
  4. Step 4: Simplify right side
    707,423.88x = 439,000,254,677.92
  5. Step 5: Solve for x
    x = 439,000,254,677.92/707,423.88
  6. Step 6: Final answer
    x = 620,561.83

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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.