Home / 486,993,424.65-672,609,441.90-320,473,082.15

Finding the Fourth Proportional to 486,993,424.65, 672,609,441.90 and 320,473,082.15

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Solution

The fourth proportional to 486,993,424.65, 672,609,441.90 and 320,473,082.15 is: 442,620,392.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,993,424.65 : 672,609,441.90 = 320,473,082.15 : x
  2. Step 2: Convert to fraction form
    486,993,424.65/672,609,441.90 = 320,473,082.15/x
  3. Step 3: Cross multiply
    486,993,424.65x = 672,609,441.90 × 320,473,082.15
  4. Step 4: Simplify right side
    486,993,424.65x = 215,553,220,928,884,320
  5. Step 5: Solve for x
    x = 215,553,220,928,884,320/486,993,424.65
  6. Step 6: Final answer
    x = 442,620,392.84

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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.