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Finding the Fourth Proportional to 660,077.16, 990,328.97 and 305,323.89

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Solution

The fourth proportional to 660,077.16, 990,328.97 and 305,323.89 is: 458,084.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,077.16 : 990,328.97 = 305,323.89 : x
  2. Step 2: Convert to fraction form
    660,077.16/990,328.97 = 305,323.89/x
  3. Step 3: Cross multiply
    660,077.16x = 990,328.97 × 305,323.89
  4. Step 4: Simplify right side
    660,077.16x = 302,371,093,500.09
  5. Step 5: Solve for x
    x = 302,371,093,500.09/660,077.16
  6. Step 6: Final answer
    x = 458,084.47

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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.