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Finding the Fourth Proportional to 707,711.68, 976,507.93 and 449,630.64

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Solution

The fourth proportional to 707,711.68, 976,507.93 and 449,630.64 is: 620,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,711.68 : 976,507.93 = 449,630.64 : x
  2. Step 2: Convert to fraction form
    707,711.68/976,507.93 = 449,630.64/x
  3. Step 3: Cross multiply
    707,711.68x = 976,507.93 × 449,630.64
  4. Step 4: Simplify right side
    707,711.68x = 439,067,885,530.98
  5. Step 5: Solve for x
    x = 439,067,885,530.98/707,711.68
  6. Step 6: Final answer
    x = 620,405.03

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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.