Home / 486,993,425.15-672,609,442.59-320,473,082.65

Finding the Fourth Proportional to 486,993,425.15, 672,609,442.59 and 320,473,082.65

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Solution

The fourth proportional to 486,993,425.15, 672,609,442.59 and 320,473,082.65 is: 442,620,393.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,993,425.15 : 672,609,442.59 = 320,473,082.65 : x
  2. Step 2: Convert to fraction form
    486,993,425.15/672,609,442.59 = 320,473,082.65/x
  3. Step 3: Cross multiply
    486,993,425.15x = 672,609,442.59 × 320,473,082.65
  4. Step 4: Simplify right side
    486,993,425.15x = 215,553,221,486,315,488
  5. Step 5: Solve for x
    x = 215,553,221,486,315,488/486,993,425.15
  6. Step 6: Final answer
    x = 442,620,393.53

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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.