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Finding the Fourth Proportional to 545,415.12, 752,707.05 and 300,399.83

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Solution

The fourth proportional to 545,415.12, 752,707.05 and 300,399.83 is: 414,570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,415.12 : 752,707.05 = 300,399.83 : x
  2. Step 2: Convert to fraction form
    545,415.12/752,707.05 = 300,399.83/x
  3. Step 3: Cross multiply
    545,415.12x = 752,707.05 × 300,399.83
  4. Step 4: Simplify right side
    545,415.12x = 226,113,066,096.27
  5. Step 5: Solve for x
    x = 226,113,066,096.27/545,415.12
  6. Step 6: Final answer
    x = 414,570.59

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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.