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Finding the Fourth Proportional to 708,286.22, 977,406.50 and 385,989.46

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Solution

The fourth proportional to 708,286.22, 977,406.50 and 385,989.46 is: 532,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,286.22 : 977,406.50 = 385,989.46 : x
  2. Step 2: Convert to fraction form
    708,286.22/977,406.50 = 385,989.46/x
  3. Step 3: Cross multiply
    708,286.22x = 977,406.50 × 385,989.46
  4. Step 4: Simplify right side
    708,286.22x = 377,268,607,135.49
  5. Step 5: Solve for x
    x = 377,268,607,135.49/708,286.22
  6. Step 6: Final answer
    x = 532,649.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.