Home / 629,420.72-943,215.24-389,021.36

Finding the Fourth Proportional to 629,420.72, 943,215.24 and 389,021.36

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Solution

The fourth proportional to 629,420.72, 943,215.24 and 389,021.36 is: 582,965.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,420.72 : 943,215.24 = 389,021.36 : x
  2. Step 2: Convert to fraction form
    629,420.72/943,215.24 = 389,021.36/x
  3. Step 3: Cross multiply
    629,420.72x = 943,215.24 × 389,021.36
  4. Step 4: Simplify right side
    629,420.72x = 366,930,875,437.53
  5. Step 5: Solve for x
    x = 366,930,875,437.53/629,420.72
  6. Step 6: Final answer
    x = 582,965.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.