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Finding the Fourth Proportional to 769,725.60, 1,155,970.80 and 559,600.80

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Solution

The fourth proportional to 769,725.60, 1,155,970.80 and 559,600.80 is: 840,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,725.60 : 1,155,970.80 = 559,600.80 : x
  2. Step 2: Convert to fraction form
    769,725.60/1,155,970.80 = 559,600.80/x
  3. Step 3: Cross multiply
    769,725.60x = 1,155,970.80 × 559,600.80
  4. Step 4: Simplify right side
    769,725.60x = 646,882,184,456.64
  5. Step 5: Solve for x
    x = 646,882,184,456.64/769,725.60
  6. Step 6: Final answer
    x = 840,406.22

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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.