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Finding the Fourth Proportional to 486,065.80, 729,098.70 and 307,995.40

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Solution

The fourth proportional to 486,065.80, 729,098.70 and 307,995.40 is: 461,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,065.80 : 729,098.70 = 307,995.40 : x
  2. Step 2: Convert to fraction form
    486,065.80/729,098.70 = 307,995.40/x
  3. Step 3: Cross multiply
    486,065.80x = 729,098.70 × 307,995.40
  4. Step 4: Simplify right side
    486,065.80x = 224,559,045,745.98
  5. Step 5: Solve for x
    x = 224,559,045,745.98/486,065.80
  6. Step 6: Final answer
    x = 461,993.10

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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.