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Finding the Fourth Proportional to 839,689.20, 1,259,071.56 and 573,750

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Solution

The fourth proportional to 839,689.20, 1,259,071.56 and 573,750 is: 860,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,689.20 : 1,259,071.56 = 573,750 : x
  2. Step 2: Convert to fraction form
    839,689.20/1,259,071.56 = 573,750/x
  3. Step 3: Cross multiply
    839,689.20x = 1,259,071.56 × 573,750
  4. Step 4: Simplify right side
    839,689.20x = 722,392,307,550
  5. Step 5: Solve for x
    x = 722,392,307,550/839,689.20
  6. Step 6: Final answer
    x = 860,309.16

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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.