Home / 783,709.57-1,081,059.88-492,859.81

Finding the Fourth Proportional to 783,709.57, 1,081,059.88 and 492,859.81

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Solution

The fourth proportional to 783,709.57, 1,081,059.88 and 492,859.81 is: 679,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,709.57 : 1,081,059.88 = 492,859.81 : x
  2. Step 2: Convert to fraction form
    783,709.57/1,081,059.88 = 492,859.81/x
  3. Step 3: Cross multiply
    783,709.57x = 1,081,059.88 × 492,859.81
  4. Step 4: Simplify right side
    783,709.57x = 532,810,967,055.42
  5. Step 5: Solve for x
    x = 532,810,967,055.42/783,709.57
  6. Step 6: Final answer
    x = 679,857.68

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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.