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Finding the Fourth Proportional to 555,361.50, 766,399.47 and 300,712.08

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Solution

The fourth proportional to 555,361.50, 766,399.47 and 300,712.08 is: 414,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,361.50 : 766,399.47 = 300,712.08 : x
  2. Step 2: Convert to fraction form
    555,361.50/766,399.47 = 300,712.08/x
  3. Step 3: Cross multiply
    555,361.50x = 766,399.47 × 300,712.08
  4. Step 4: Simplify right side
    555,361.50x = 230,465,578,734.60
  5. Step 5: Solve for x
    x = 230,465,578,734.60/555,361.50
  6. Step 6: Final answer
    x = 414,983.00

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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.