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Finding the Fourth Proportional to 545,406.62, 817,836.16 and 317,775.92

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Solution

The fourth proportional to 545,406.62, 817,836.16 and 317,775.92 is: 476,504.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,406.62 : 817,836.16 = 317,775.92 : x
  2. Step 2: Convert to fraction form
    545,406.62/817,836.16 = 317,775.92/x
  3. Step 3: Cross multiply
    545,406.62x = 817,836.16 × 317,775.92
  4. Step 4: Simplify right side
    545,406.62x = 259,888,638,153.27
  5. Step 5: Solve for x
    x = 259,888,638,153.27/545,406.62
  6. Step 6: Final answer
    x = 476,504.37

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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.