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Finding the Fourth Proportional to 520,262.67, 717,962.22 and 305,402.73

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Solution

The fourth proportional to 520,262.67, 717,962.22 and 305,402.73 is: 421,455.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,262.67 : 717,962.22 = 305,402.73 : x
  2. Step 2: Convert to fraction form
    520,262.67/717,962.22 = 305,402.73/x
  3. Step 3: Cross multiply
    520,262.67x = 717,962.22 × 305,402.73
  4. Step 4: Simplify right side
    520,262.67x = 219,267,622,024.86
  5. Step 5: Solve for x
    x = 219,267,622,024.86/520,262.67
  6. Step 6: Final answer
    x = 421,455.61

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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.