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Finding the Fourth Proportional to 545,707.80, 753,099.47 and 303,990.32

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Solution

The fourth proportional to 545,707.80, 753,099.47 and 303,990.32 is: 419,519.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,707.80 : 753,099.47 = 303,990.32 : x
  2. Step 2: Convert to fraction form
    545,707.80/753,099.47 = 303,990.32/x
  3. Step 3: Cross multiply
    545,707.80x = 753,099.47 × 303,990.32
  4. Step 4: Simplify right side
    545,707.80x = 228,934,943,591.68
  5. Step 5: Solve for x
    x = 228,934,943,591.68/545,707.80
  6. Step 6: Final answer
    x = 419,519.28

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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.