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Finding the Fourth Proportional to 559,663.62, 772,313.31 and 305,009.34

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Solution

The fourth proportional to 559,663.62, 772,313.31 and 305,009.34 is: 420,900.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,663.62 : 772,313.31 = 305,009.34 : x
  2. Step 2: Convert to fraction form
    559,663.62/772,313.31 = 305,009.34/x
  3. Step 3: Cross multiply
    559,663.62x = 772,313.31 × 305,009.34
  4. Step 4: Simplify right side
    559,663.62x = 235,562,772,956.32
  5. Step 5: Solve for x
    x = 235,562,772,956.32/559,663.62
  6. Step 6: Final answer
    x = 420,900.63

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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.