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Finding the Fourth Proportional to 585,012.96, 807,372 and 355,517.28

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Solution

The fourth proportional to 585,012.96, 807,372 and 355,517.28 is: 490,646.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,012.96 : 807,372 = 355,517.28 : x
  2. Step 2: Convert to fraction form
    585,012.96/807,372 = 355,517.28/x
  3. Step 3: Cross multiply
    585,012.96x = 807,372 × 355,517.28
  4. Step 4: Simplify right side
    585,012.96x = 287,034,697,388.16
  5. Step 5: Solve for x
    x = 287,034,697,388.16/585,012.96
  6. Step 6: Final answer
    x = 490,646.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.