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Finding the Fourth Proportional to 643,009.64, 964,317.48 and 444,605.00

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Solution

The fourth proportional to 643,009.64, 964,317.48 and 444,605.00 is: 666,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,009.64 : 964,317.48 = 444,605.00 : x
  2. Step 2: Convert to fraction form
    643,009.64/964,317.48 = 444,605.00/x
  3. Step 3: Cross multiply
    643,009.64x = 964,317.48 × 444,605.00
  4. Step 4: Simplify right side
    643,009.64x = 428,740,368,373.81
  5. Step 5: Solve for x
    x = 428,740,368,373.81/643,009.64
  6. Step 6: Final answer
    x = 666,771.30

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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.