Home / 711,516.34-981,910.92-389,240.02

Finding the Fourth Proportional to 711,516.34, 981,910.92 and 389,240.02

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Solution

The fourth proportional to 711,516.34, 981,910.92 and 389,240.02 is: 537,161.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,516.34 : 981,910.92 = 389,240.02 : x
  2. Step 2: Convert to fraction form
    711,516.34/981,910.92 = 389,240.02/x
  3. Step 3: Cross multiply
    711,516.34x = 981,910.92 × 389,240.02
  4. Step 4: Simplify right side
    711,516.34x = 382,199,026,139.02
  5. Step 5: Solve for x
    x = 382,199,026,139.02/711,516.34
  6. Step 6: Final answer
    x = 537,161.28

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1.5x scale

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.