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Finding the Fourth Proportional to 644,322.80, 966,484.20 and 540,124.40

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Solution

The fourth proportional to 644,322.80, 966,484.20 and 540,124.40 is: 810,186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,322.80 : 966,484.20 = 540,124.40 : x
  2. Step 2: Convert to fraction form
    644,322.80/966,484.20 = 540,124.40/x
  3. Step 3: Cross multiply
    644,322.80x = 966,484.20 × 540,124.40
  4. Step 4: Simplify right side
    644,322.80x = 522,021,698,634.48
  5. Step 5: Solve for x
    x = 522,021,698,634.48/644,322.80
  6. Step 6: Final answer
    x = 810,186.60

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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.