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Finding the Fourth Proportional to 545,720, 753,064.32 and 300,697.16

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Solution

The fourth proportional to 545,720, 753,064.32 and 300,697.16 is: 414,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,720 : 753,064.32 = 300,697.16 : x
  2. Step 2: Convert to fraction form
    545,720/753,064.32 = 300,697.16/x
  3. Step 3: Cross multiply
    545,720x = 753,064.32 × 300,697.16
  4. Step 4: Simplify right side
    545,720x = 226,444,302,321.33
  5. Step 5: Solve for x
    x = 226,444,302,321.33/545,720
  6. Step 6: Final answer
    x = 414,945.95

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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.