Home / 711,322.28-981,610.96-389,031.36

Finding the Fourth Proportional to 711,322.28, 981,610.96 and 389,031.36

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Solution

The fourth proportional to 711,322.28, 981,610.96 and 389,031.36 is: 536,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,322.28 : 981,610.96 = 389,031.36 : x
  2. Step 2: Convert to fraction form
    711,322.28/981,610.96 = 389,031.36/x
  3. Step 3: Cross multiply
    711,322.28x = 981,610.96 × 389,031.36
  4. Step 4: Simplify right side
    711,322.28x = 381,877,446,759.71
  5. Step 5: Solve for x
    x = 381,877,446,759.71/711,322.28
  6. Step 6: Final answer
    x = 536,855.74

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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.