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Finding the Fourth Proportional to 577,811.80, 866,717.70 and 518,908.60

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Solution

The fourth proportional to 577,811.80, 866,717.70 and 518,908.60 is: 778,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,811.80 : 866,717.70 = 518,908.60 : x
  2. Step 2: Convert to fraction form
    577,811.80/866,717.70 = 518,908.60/x
  3. Step 3: Cross multiply
    577,811.80x = 866,717.70 × 518,908.60
  4. Step 4: Simplify right side
    577,811.80x = 449,747,268,302.22
  5. Step 5: Solve for x
    x = 449,747,268,302.22/577,811.80
  6. Step 6: Final answer
    x = 778,362.90

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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.