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Finding the Fourth Proportional to 445,436.13, 665,707.48 and 325,744.36

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Solution

The fourth proportional to 445,436.13, 665,707.48 and 325,744.36 is: 486,827.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,436.13 : 665,707.48 = 325,744.36 : x
  2. Step 2: Convert to fraction form
    445,436.13/665,707.48 = 325,744.36/x
  3. Step 3: Cross multiply
    445,436.13x = 665,707.48 × 325,744.36
  4. Step 4: Simplify right side
    445,436.13x = 216,850,454,541.18
  5. Step 5: Solve for x
    x = 216,850,454,541.18/445,436.13
  6. Step 6: Final answer
    x = 486,827.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.