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Finding the Fourth Proportional to 659,988.48, 989,824.12 and 304,661.20

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Solution

The fourth proportional to 659,988.48, 989,824.12 and 304,661.20 is: 456,918.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,988.48 : 989,824.12 = 304,661.20 : x
  2. Step 2: Convert to fraction form
    659,988.48/989,824.12 = 304,661.20/x
  3. Step 3: Cross multiply
    659,988.48x = 989,824.12 × 304,661.20
  4. Step 4: Simplify right side
    659,988.48x = 301,561,004,188.14
  5. Step 5: Solve for x
    x = 301,561,004,188.14/659,988.48
  6. Step 6: Final answer
    x = 456,918.59

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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.