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Finding the Fourth Proportional to 707,711.42, 976,507.58 and 449,630.39

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Solution

The fourth proportional to 707,711.42, 976,507.58 and 449,630.39 is: 620,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,711.42 : 976,507.58 = 449,630.39 : x
  2. Step 2: Convert to fraction form
    707,711.42/976,507.58 = 449,630.39/x
  3. Step 3: Cross multiply
    707,711.42x = 976,507.58 × 449,630.39
  4. Step 4: Simplify right side
    707,711.42x = 439,067,487,598.70
  5. Step 5: Solve for x
    x = 439,067,487,598.70/707,711.42
  6. Step 6: Final answer
    x = 620,404.69

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1.5x scale

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.