Home / 711,402.93-981,743.66-389,106.10

Finding the Fourth Proportional to 711,402.93, 981,743.66 and 389,106.10

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Solution

The fourth proportional to 711,402.93, 981,743.66 and 389,106.10 is: 536,970.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,402.93 : 981,743.66 = 389,106.10 : x
  2. Step 2: Convert to fraction form
    711,402.93/981,743.66 = 389,106.10/x
  3. Step 3: Cross multiply
    711,402.93x = 981,743.66 × 389,106.10
  4. Step 4: Simplify right side
    711,402.93x = 382,002,446,742.33
  5. Step 5: Solve for x
    x = 382,002,446,742.33/711,402.93
  6. Step 6: Final answer
    x = 536,970.58

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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.