Home / 509,739.93-703,485.89-280,337.61

Finding the Fourth Proportional to 509,739.93, 703,485.89 and 280,337.61

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Solution

The fourth proportional to 509,739.93, 703,485.89 and 280,337.61 is: 386,890.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,739.93 : 703,485.89 = 280,337.61 : x
  2. Step 2: Convert to fraction form
    509,739.93/703,485.89 = 280,337.61/x
  3. Step 3: Cross multiply
    509,739.93x = 703,485.89 × 280,337.61
  4. Step 4: Simplify right side
    509,739.93x = 197,213,551,669.64
  5. Step 5: Solve for x
    x = 197,213,551,669.64/509,739.93
  6. Step 6: Final answer
    x = 386,890.53

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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.