Home / 999,120.56-1,378,783.35-540,231.93

Finding the Fourth Proportional to 999,120.56, 1,378,783.35 and 540,231.93

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Solution

The fourth proportional to 999,120.56, 1,378,783.35 and 540,231.93 is: 745,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,120.56 : 1,378,783.35 = 540,231.93 : x
  2. Step 2: Convert to fraction form
    999,120.56/1,378,783.35 = 540,231.93/x
  3. Step 3: Cross multiply
    999,120.56x = 1,378,783.35 × 540,231.93
  4. Step 4: Simplify right side
    999,120.56x = 744,862,790,222.37
  5. Step 5: Solve for x
    x = 744,862,790,222.37/999,120.56
  6. Step 6: Final answer
    x = 745,518.43

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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.