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Finding the Fourth Proportional to 551,909.40, 827,216.10 and 545,999.64

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Solution

The fourth proportional to 551,909.40, 827,216.10 and 545,999.64 is: 818,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,909.40 : 827,216.10 = 545,999.64 : x
  2. Step 2: Convert to fraction form
    551,909.40/827,216.10 = 545,999.64/x
  3. Step 3: Cross multiply
    551,909.40x = 827,216.10 × 545,999.64
  4. Step 4: Simplify right side
    551,909.40x = 451,659,692,802.20
  5. Step 5: Solve for x
    x = 451,659,692,802.20/551,909.40
  6. Step 6: Final answer
    x = 818,358.40

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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.