Home / 509,629.17-703,288.70-280,190.35

Finding the Fourth Proportional to 509,629.17, 703,288.70 and 280,190.35

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Solution

The fourth proportional to 509,629.17, 703,288.70 and 280,190.35 is: 386,662.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,629.17 : 703,288.70 = 280,190.35 : x
  2. Step 2: Convert to fraction form
    509,629.17/703,288.70 = 280,190.35/x
  3. Step 3: Cross multiply
    509,629.17x = 703,288.70 × 280,190.35
  4. Step 4: Simplify right side
    509,629.17x = 197,054,707,004.05
  5. Step 5: Solve for x
    x = 197,054,707,004.05/509,629.17
  6. Step 6: Final answer
    x = 386,662.93

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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.