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Finding the Fourth Proportional to 660,076.16, 990,327.47 and 305,322.89

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Solution

The fourth proportional to 660,076.16, 990,327.47 and 305,322.89 is: 458,082.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,076.16 : 990,327.47 = 305,322.89 : x
  2. Step 2: Convert to fraction form
    660,076.16/990,327.47 = 305,322.89/x
  3. Step 3: Cross multiply
    660,076.16x = 990,327.47 × 305,322.89
  4. Step 4: Simplify right side
    660,076.16x = 302,369,638,708.54
  5. Step 5: Solve for x
    x = 302,369,638,708.54/660,076.16
  6. Step 6: Final answer
    x = 458,082.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.