Home / 711,107,275,618.72-981,329,012,130.56-385,946,572,433.76

Finding the Fourth Proportional to 711,107,275,618.72, 981,329,012,130.56 and 385,946,572,433.76

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Solution

The fourth proportional to 711,107,275,618.72, 981,329,012,130.56 and 385,946,572,433.76 is: 532,606,797,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,107,275,618.72 : 981,329,012,130.56 = 385,946,572,433.76 : x
  2. Step 2: Convert to fraction form
    711,107,275,618.72/981,329,012,130.56 = 385,946,572,433.76/x
  3. Step 3: Cross multiply
    711,107,275,618.72x = 981,329,012,130.56 × 385,946,572,433.76
  4. Step 4: Simplify right side
    711,107,275,618.72x = 378,740,568,661,597,337,157,632
  5. Step 5: Solve for x
    x = 378,740,568,661,597,337,157,632/711,107,275,618.72
  6. Step 6: Final answer
    x = 532,606,797,380.98

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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.