Home / 711,139,092,433.55-981,372,673,862.20-385,978,451,283.28

Finding the Fourth Proportional to 711,139,092,433.55, 981,372,673,862.20 and 385,978,451,283.28

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Solution

The fourth proportional to 711,139,092,433.55, 981,372,673,862.20 and 385,978,451,283.28 is: 532,650,656,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,433.55 : 981,372,673,862.20 = 385,978,451,283.28 : x
  2. Step 2: Convert to fraction form
    711,139,092,433.55/981,372,673,862.20 = 385,978,451,283.28/x
  3. Step 3: Cross multiply
    711,139,092,433.55x = 981,372,673,862.20 × 385,978,451,283.28
  4. Step 4: Simplify right side
    711,139,092,433.55x = 378,788,704,789,063,373,160,448
  5. Step 5: Solve for x
    x = 378,788,704,789,063,373,160,448/711,139,092,433.55
  6. Step 6: Final answer
    x = 532,650,656,980.24

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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.