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Finding the Fourth Proportional to 519,957.60, 779,061.60 and 488,464.80

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Solution

The fourth proportional to 519,957.60, 779,061.60 and 488,464.80 is: 731,875.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,957.60 : 779,061.60 = 488,464.80 : x
  2. Step 2: Convert to fraction form
    519,957.60/779,061.60 = 488,464.80/x
  3. Step 3: Cross multiply
    519,957.60x = 779,061.60 × 488,464.80
  4. Step 4: Simplify right side
    519,957.60x = 380,544,168,631.68
  5. Step 5: Solve for x
    x = 380,544,168,631.68/519,957.60
  6. Step 6: Final answer
    x = 731,875.38

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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.