Home / 447,823.12-618,782.80-357,920.98

Finding the Fourth Proportional to 447,823.12, 618,782.80 and 357,920.98

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Solution

The fourth proportional to 447,823.12, 618,782.80 and 357,920.98 is: 494,559.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,823.12 : 618,782.80 = 357,920.98 : x
  2. Step 2: Convert to fraction form
    447,823.12/618,782.80 = 357,920.98/x
  3. Step 3: Cross multiply
    447,823.12x = 618,782.80 × 357,920.98
  4. Step 4: Simplify right side
    447,823.12x = 221,475,346,183.14
  5. Step 5: Solve for x
    x = 221,475,346,183.14/447,823.12
  6. Step 6: Final answer
    x = 494,559.87

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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.