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Finding the Fourth Proportional to 545,717.34, 753,112.60 and 303,999.84

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Solution

The fourth proportional to 545,717.34, 753,112.60 and 303,999.84 is: 419,532.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,717.34 : 753,112.60 = 303,999.84 : x
  2. Step 2: Convert to fraction form
    545,717.34/753,112.60 = 303,999.84/x
  3. Step 3: Cross multiply
    545,717.34x = 753,112.60 × 303,999.84
  4. Step 4: Simplify right side
    545,717.34x = 228,946,109,901.98
  5. Step 5: Solve for x
    x = 228,946,109,901.98/545,717.34
  6. Step 6: Final answer
    x = 419,532.41

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1.5x scale

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.