Home / 1,002,636.15-1,505,430.45-778,249.95

Finding the Fourth Proportional to 1,002,636.15, 1,505,430.45 and 778,249.95

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Solution

The fourth proportional to 1,002,636.15, 1,505,430.45 and 778,249.95 is: 1,168,520.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002,636.15 : 1,505,430.45 = 778,249.95 : x
  2. Step 2: Convert to fraction form
    1,002,636.15/1,505,430.45 = 778,249.95/x
  3. Step 3: Cross multiply
    1,002,636.15x = 1,505,430.45 × 778,249.95
  4. Step 4: Simplify right side
    1,002,636.15x = 1,171,601,172,440.98
  5. Step 5: Solve for x
    x = 1,171,601,172,440.98/1,002,636.15
  6. Step 6: Final answer
    x = 1,168,520.78

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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.