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Finding the Fourth Proportional to 873,784.40, 1,310,611.80 and 368,214.80

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Solution

The fourth proportional to 873,784.40, 1,310,611.80 and 368,214.80 is: 552,294.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,784.40 : 1,310,611.80 = 368,214.80 : x
  2. Step 2: Convert to fraction form
    873,784.40/1,310,611.80 = 368,214.80/x
  3. Step 3: Cross multiply
    873,784.40x = 1,310,611.80 × 368,214.80
  4. Step 4: Simplify right side
    873,784.40x = 482,586,661,814.64
  5. Step 5: Solve for x
    x = 482,586,661,814.64/873,784.40
  6. Step 6: Final answer
    x = 552,294.89

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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.