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Finding the Fourth Proportional to 586,879.82, 809,897.52 and 345,172.58

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Solution

The fourth proportional to 586,879.82, 809,897.52 and 345,172.58 is: 476,340.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,879.82 : 809,897.52 = 345,172.58 : x
  2. Step 2: Convert to fraction form
    586,879.82/809,897.52 = 345,172.58/x
  3. Step 3: Cross multiply
    586,879.82x = 809,897.52 × 345,172.58
  4. Step 4: Simplify right side
    586,879.82x = 279,554,416,514.00
  5. Step 5: Solve for x
    x = 279,554,416,514.00/586,879.82
  6. Step 6: Final answer
    x = 476,340.14

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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.