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Finding the Fourth Proportional to 555,457.20, 766,527.12 and 300,802.56

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Solution

The fourth proportional to 555,457.20, 766,527.12 and 300,802.56 is: 415,105.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,457.20 : 766,527.12 = 300,802.56 : x
  2. Step 2: Convert to fraction form
    555,457.20/766,527.12 = 300,802.56/x
  3. Step 3: Cross multiply
    555,457.20x = 766,527.12 × 300,802.56
  4. Step 4: Simplify right side
    555,457.20x = 230,573,320,005.43
  5. Step 5: Solve for x
    x = 230,573,320,005.43/555,457.20
  6. Step 6: Final answer
    x = 415,105.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.