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Finding the Fourth Proportional to 545,712.35, 753,034.19 and 303,989.74

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Solution

The fourth proportional to 545,712.35, 753,034.19 and 303,989.74 is: 419,478.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,712.35 : 753,034.19 = 303,989.74 : x
  2. Step 2: Convert to fraction form
    545,712.35/753,034.19 = 303,989.74/x
  3. Step 3: Cross multiply
    545,712.35x = 753,034.19 × 303,989.74
  4. Step 4: Simplify right side
    545,712.35x = 228,914,664,226.68
  5. Step 5: Solve for x
    x = 228,914,664,226.68/545,712.35
  6. Step 6: Final answer
    x = 419,478.63

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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.