Home / 711,429.62-981,752.00-389,132.74

Finding the Fourth Proportional to 711,429.62, 981,752.00 and 389,132.74

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Solution

The fourth proportional to 711,429.62, 981,752.00 and 389,132.74 is: 536,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,429.62 : 981,752.00 = 389,132.74 : x
  2. Step 2: Convert to fraction form
    711,429.62/981,752.00 = 389,132.74/x
  3. Step 3: Cross multiply
    711,429.62x = 981,752.00 × 389,132.74
  4. Step 4: Simplify right side
    711,429.62x = 382,031,845,042.01
  5. Step 5: Solve for x
    x = 382,031,845,042.01/711,429.62
  6. Step 6: Final answer
    x = 536,991.77

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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.