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Finding the Fourth Proportional to 807,019.88, 1,208,955 and 628,691.90

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Solution

The fourth proportional to 807,019.88, 1,208,955 and 628,691.90 is: 941,811.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,019.88 : 1,208,955 = 628,691.90 : x
  2. Step 2: Convert to fraction form
    807,019.88/1,208,955 = 628,691.90/x
  3. Step 3: Cross multiply
    807,019.88x = 1,208,955 × 628,691.90
  4. Step 4: Simplify right side
    807,019.88x = 760,060,218,986.89
  5. Step 5: Solve for x
    x = 760,060,218,986.89/807,019.88
  6. Step 6: Final answer
    x = 941,811.02

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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.