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Finding the Fourth Proportional to 547,782.60, 821,673.90 and 539,909.40

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Solution

The fourth proportional to 547,782.60, 821,673.90 and 539,909.40 is: 809,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,782.60 : 821,673.90 = 539,909.40 : x
  2. Step 2: Convert to fraction form
    547,782.60/821,673.90 = 539,909.40/x
  3. Step 3: Cross multiply
    547,782.60x = 821,673.90 × 539,909.40
  4. Step 4: Simplify right side
    547,782.60x = 443,629,462,344.66
  5. Step 5: Solve for x
    x = 443,629,462,344.66/547,782.60
  6. Step 6: Final answer
    x = 809,864.10

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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.