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Finding the Fourth Proportional to 672,091.86, 927,486.21 and 370,285.86

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Solution

The fourth proportional to 672,091.86, 927,486.21 and 370,285.86 is: 510,994.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,091.86 : 927,486.21 = 370,285.86 : x
  2. Step 2: Convert to fraction form
    672,091.86/927,486.21 = 370,285.86/x
  3. Step 3: Cross multiply
    672,091.86x = 927,486.21 × 370,285.86
  4. Step 4: Simplify right side
    672,091.86x = 343,435,028,907.99
  5. Step 5: Solve for x
    x = 343,435,028,907.99/672,091.86
  6. Step 6: Final answer
    x = 510,994.18

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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.