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Finding the Fourth Proportional to 545,705.39, 753,096.13 and 303,987.90

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Solution

The fourth proportional to 545,705.39, 753,096.13 and 303,987.90 is: 419,515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,705.39 : 753,096.13 = 303,987.90 : x
  2. Step 2: Convert to fraction form
    545,705.39/753,096.13 = 303,987.90/x
  3. Step 3: Cross multiply
    545,705.39x = 753,096.13 × 303,987.90
  4. Step 4: Simplify right side
    545,705.39x = 228,932,111,056.83
  5. Step 5: Solve for x
    x = 228,932,111,056.83/545,705.39
  6. Step 6: Final answer
    x = 419,515.94

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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.