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Finding the Fourth Proportional to 555,359.25, 766,396.17 and 300,710.64

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Solution

The fourth proportional to 555,359.25, 766,396.17 and 300,710.64 is: 414,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,359.25 : 766,396.17 = 300,710.64 : x
  2. Step 2: Convert to fraction form
    555,359.25/766,396.17 = 300,710.64/x
  3. Step 3: Cross multiply
    555,359.25x = 766,396.17 × 300,710.64
  4. Step 4: Simplify right side
    555,359.25x = 230,463,482,774.25
  5. Step 5: Solve for x
    x = 230,463,482,774.25/555,359.25
  6. Step 6: Final answer
    x = 414,980.90

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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.