Home / 711,400.59-981,725.67-389,116.98

Finding the Fourth Proportional to 711,400.59, 981,725.67 and 389,116.98

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Solution

The fourth proportional to 711,400.59, 981,725.67 and 389,116.98 is: 536,977.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,400.59 : 981,725.67 = 389,116.98 : x
  2. Step 2: Convert to fraction form
    711,400.59/981,725.67 = 389,116.98/x
  3. Step 3: Cross multiply
    711,400.59x = 981,725.67 × 389,116.98
  4. Step 4: Simplify right side
    711,400.59x = 382,006,127,898.88
  5. Step 5: Solve for x
    x = 382,006,127,898.88/711,400.59
  6. Step 6: Final answer
    x = 536,977.52

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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.