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Finding the Fourth Proportional to 662,385.40, 994,237.30 and 307,479.80

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Solution

The fourth proportional to 662,385.40, 994,237.30 and 307,479.80 is: 461,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,385.40 : 994,237.30 = 307,479.80 : x
  2. Step 2: Convert to fraction form
    662,385.40/994,237.30 = 307,479.80/x
  3. Step 3: Cross multiply
    662,385.40x = 994,237.30 × 307,479.80
  4. Step 4: Simplify right side
    662,385.40x = 305,707,886,156.54
  5. Step 5: Solve for x
    x = 305,707,886,156.54/662,385.40
  6. Step 6: Final answer
    x = 461,525.70

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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.