Home / 711,066.24-981,285.57-388,796.40

Finding the Fourth Proportional to 711,066.24, 981,285.57 and 388,796.40

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Solution

The fourth proportional to 711,066.24, 981,285.57 and 388,796.40 is: 536,546.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,066.24 : 981,285.57 = 388,796.40 : x
  2. Step 2: Convert to fraction form
    711,066.24/981,285.57 = 388,796.40/x
  3. Step 3: Cross multiply
    711,066.24x = 981,285.57 × 388,796.40
  4. Step 4: Simplify right side
    711,066.24x = 381,520,296,987.95
  5. Step 5: Solve for x
    x = 381,520,296,987.95/711,066.24
  6. Step 6: Final answer
    x = 536,546.77

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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.