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Finding the Fourth Proportional to 545,181.60, 816,897.60 and 513,688.80

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Solution

The fourth proportional to 545,181.60, 816,897.60 and 513,688.80 is: 769,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,181.60 : 816,897.60 = 513,688.80 : x
  2. Step 2: Convert to fraction form
    545,181.60/816,897.60 = 513,688.80/x
  3. Step 3: Cross multiply
    545,181.60x = 816,897.60 × 513,688.80
  4. Step 4: Simplify right side
    545,181.60x = 419,631,147,866.88
  5. Step 5: Solve for x
    x = 419,631,147,866.88/545,181.60
  6. Step 6: Final answer
    x = 769,708.93

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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.