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Finding the Fourth Proportional to 659,891.76, 989,393.28 and 304,710

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Solution

The fourth proportional to 659,891.76, 989,393.28 and 304,710 is: 456,859.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,891.76 : 989,393.28 = 304,710 : x
  2. Step 2: Convert to fraction form
    659,891.76/989,393.28 = 304,710/x
  3. Step 3: Cross multiply
    659,891.76x = 989,393.28 × 304,710
  4. Step 4: Simplify right side
    659,891.76x = 301,478,026,348.80
  5. Step 5: Solve for x
    x = 301,478,026,348.80/659,891.76
  6. Step 6: Final answer
    x = 456,859.81

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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.