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Finding the Fourth Proportional to 629,760.08, 869,036.10 and 357,790.22

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Solution

The fourth proportional to 629,760.08, 869,036.10 and 357,790.22 is: 493,731.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,760.08 : 869,036.10 = 357,790.22 : x
  2. Step 2: Convert to fraction form
    629,760.08/869,036.10 = 357,790.22/x
  3. Step 3: Cross multiply
    629,760.08x = 869,036.10 × 357,790.22
  4. Step 4: Simplify right side
    629,760.08x = 310,932,617,406.94
  5. Step 5: Solve for x
    x = 310,932,617,406.94/629,760.08
  6. Step 6: Final answer
    x = 493,731.86

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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.