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Finding the Fourth Proportional to 651,687.21, 899,071.77 and 406,529.30

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Solution

The fourth proportional to 651,687.21, 899,071.77 and 406,529.30 is: 560,850.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,687.21 : 899,071.77 = 406,529.30 : x
  2. Step 2: Convert to fraction form
    651,687.21/899,071.77 = 406,529.30/x
  3. Step 3: Cross multiply
    651,687.21x = 899,071.77 × 406,529.30
  4. Step 4: Simplify right side
    651,687.21x = 365,499,016,490.02
  5. Step 5: Solve for x
    x = 365,499,016,490.02/651,687.21
  6. Step 6: Final answer
    x = 560,850.37

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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.