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Finding the Fourth Proportional to 629,930.22, 869,325.58 and 358,009.58

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Solution

The fourth proportional to 629,930.22, 869,325.58 and 358,009.58 is: 494,065.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,930.22 : 869,325.58 = 358,009.58 : x
  2. Step 2: Convert to fraction form
    629,930.22/869,325.58 = 358,009.58/x
  3. Step 3: Cross multiply
    629,930.22x = 869,325.58 × 358,009.58
  4. Step 4: Simplify right side
    629,930.22x = 311,226,885,779.06
  5. Step 5: Solve for x
    x = 311,226,885,779.06/629,930.22
  6. Step 6: Final answer
    x = 494,065.65

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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.