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Finding the Fourth Proportional to 629,760.26, 869,036.37 and 357,790.41

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Solution

The fourth proportional to 629,760.26, 869,036.37 and 357,790.41 is: 493,732.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,760.26 : 869,036.37 = 357,790.41 : x
  2. Step 2: Convert to fraction form
    629,760.26/869,036.37 = 357,790.41/x
  3. Step 3: Cross multiply
    629,760.26x = 869,036.37 × 357,790.41
  4. Step 4: Simplify right side
    629,760.26x = 310,932,879,127.21
  5. Step 5: Solve for x
    x = 310,932,879,127.21/629,760.26
  6. Step 6: Final answer
    x = 493,732.14

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1.5x scale

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.