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Finding the Fourth Proportional to 879,241.60, 1,317,825.60 and 458,300.80

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Solution

The fourth proportional to 879,241.60, 1,317,825.60 and 458,300.80 is: 686,910.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,241.60 : 1,317,825.60 = 458,300.80 : x
  2. Step 2: Convert to fraction form
    879,241.60/1,317,825.60 = 458,300.80/x
  3. Step 3: Cross multiply
    879,241.60x = 1,317,825.60 × 458,300.80
  4. Step 4: Simplify right side
    879,241.60x = 603,960,526,740.48
  5. Step 5: Solve for x
    x = 603,960,526,740.48/879,241.60
  6. Step 6: Final answer
    x = 686,910.77

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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.