Home / 486,993,429.14-672,609,448.12-320,473,086.64

Finding the Fourth Proportional to 486,993,429.14, 672,609,448.12 and 320,473,086.64

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Solution

The fourth proportional to 486,993,429.14, 672,609,448.12 and 320,473,086.64 is: 442,620,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,993,429.14 : 672,609,448.12 = 320,473,086.64 : x
  2. Step 2: Convert to fraction form
    486,993,429.14/672,609,448.12 = 320,473,086.64/x
  3. Step 3: Cross multiply
    486,993,429.14x = 672,609,448.12 × 320,473,086.64
  4. Step 4: Simplify right side
    486,993,429.14x = 215,553,225,942,243,328
  5. Step 5: Solve for x
    x = 215,553,225,942,243,328/486,993,429.14
  6. Step 6: Final answer
    x = 442,620,399.05

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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.