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Finding the Fourth Proportional to 545,809.17, 817,808.78 and 331,930.19

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Solution

The fourth proportional to 545,809.17, 817,808.78 and 331,930.19 is: 497,344.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,809.17 : 817,808.78 = 331,930.19 : x
  2. Step 2: Convert to fraction form
    545,809.17/817,808.78 = 331,930.19/x
  3. Step 3: Cross multiply
    545,809.17x = 817,808.78 × 331,930.19
  4. Step 4: Simplify right side
    545,809.17x = 271,455,423,729.07
  5. Step 5: Solve for x
    x = 271,455,423,729.07/545,809.17
  6. Step 6: Final answer
    x = 497,344.93

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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.