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Finding the Fourth Proportional to 577,729.40, 867,106.10 and 340,775.80

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Solution

The fourth proportional to 577,729.40, 867,106.10 and 340,775.80 is: 511,465.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,729.40 : 867,106.10 = 340,775.80 : x
  2. Step 2: Convert to fraction form
    577,729.40/867,106.10 = 340,775.80/x
  3. Step 3: Cross multiply
    577,729.40x = 867,106.10 × 340,775.80
  4. Step 4: Simplify right side
    577,729.40x = 295,488,774,912.38
  5. Step 5: Solve for x
    x = 295,488,774,912.38/577,729.40
  6. Step 6: Final answer
    x = 511,465.71

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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.