Home / 1,125,391.37-1,688,403.20-451,945.61

Finding the Fourth Proportional to 1,125,391.37, 1,688,403.20 and 451,945.61

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Solution

The fourth proportional to 1,125,391.37, 1,688,403.20 and 451,945.61 is: 678,045.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,391.37 : 1,688,403.20 = 451,945.61 : x
  2. Step 2: Convert to fraction form
    1,125,391.37/1,688,403.20 = 451,945.61/x
  3. Step 3: Cross multiply
    1,125,391.37x = 1,688,403.20 × 451,945.61
  4. Step 4: Simplify right side
    1,125,391.37x = 763,066,414,149.95
  5. Step 5: Solve for x
    x = 763,066,414,149.95/1,125,391.37
  6. Step 6: Final answer
    x = 678,045.38

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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.