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Finding the Fourth Proportional to 585,455.21, 807,917.65 and 330,800.93

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Solution

The fourth proportional to 585,455.21, 807,917.65 and 330,800.93 is: 456,499.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,455.21 : 807,917.65 = 330,800.93 : x
  2. Step 2: Convert to fraction form
    585,455.21/807,917.65 = 330,800.93/x
  3. Step 3: Cross multiply
    585,455.21x = 807,917.65 × 330,800.93
  4. Step 4: Simplify right side
    585,455.21x = 267,259,909,983.42
  5. Step 5: Solve for x
    x = 267,259,909,983.42/585,455.21
  6. Step 6: Final answer
    x = 456,499.33

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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.