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Finding the Fourth Proportional to 519,880.80, 778,654.80 and 508,216.80

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Solution

The fourth proportional to 519,880.80, 778,654.80 and 508,216.80 is: 761,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,880.80 : 778,654.80 = 508,216.80 : x
  2. Step 2: Convert to fraction form
    519,880.80/778,654.80 = 508,216.80/x
  3. Step 3: Cross multiply
    519,880.80x = 778,654.80 × 508,216.80
  4. Step 4: Simplify right side
    519,880.80x = 395,725,450,760.64
  5. Step 5: Solve for x
    x = 395,725,450,760.64/519,880.80
  6. Step 6: Final answer
    x = 761,184.97

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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.