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Finding the Fourth Proportional to 873,290.80, 1,309,521.32 and 304,602.80

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Solution

The fourth proportional to 873,290.80, 1,309,521.32 and 304,602.80 is: 456,759.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,290.80 : 1,309,521.32 = 304,602.80 : x
  2. Step 2: Convert to fraction form
    873,290.80/1,309,521.32 = 304,602.80/x
  3. Step 3: Cross multiply
    873,290.80x = 1,309,521.32 × 304,602.80
  4. Step 4: Simplify right side
    873,290.80x = 398,883,860,731.70
  5. Step 5: Solve for x
    x = 398,883,860,731.70/873,290.80
  6. Step 6: Final answer
    x = 456,759.49

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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.