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Finding the Fourth Proportional to 554,961.52, 765,847.58 and 300,312.71

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Solution

The fourth proportional to 554,961.52, 765,847.58 and 300,312.71 is: 414,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,961.52 : 765,847.58 = 300,312.71 : x
  2. Step 2: Convert to fraction form
    554,961.52/765,847.58 = 300,312.71/x
  3. Step 3: Cross multiply
    554,961.52x = 765,847.58 × 300,312.71
  4. Step 4: Simplify right side
    554,961.52x = 229,993,759,737.87
  5. Step 5: Solve for x
    x = 229,993,759,737.87/554,961.52
  6. Step 6: Final answer
    x = 414,431.90

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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.