Home / 711,139,092,417.55-981,372,673,839.95-385,978,451,267.16

Finding the Fourth Proportional to 711,139,092,417.55, 981,372,673,839.95 and 385,978,451,267.16

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Solution

The fourth proportional to 711,139,092,417.55, 981,372,673,839.95 and 385,978,451,267.16 is: 532,650,656,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,417.55 : 981,372,673,839.95 = 385,978,451,267.16 : x
  2. Step 2: Convert to fraction form
    711,139,092,417.55/981,372,673,839.95 = 385,978,451,267.16/x
  3. Step 3: Cross multiply
    711,139,092,417.55x = 981,372,673,839.95 × 385,978,451,267.16
  4. Step 4: Simplify right side
    711,139,092,417.55x = 378,788,704,764,655,610,888,192
  5. Step 5: Solve for x
    x = 378,788,704,764,655,610,888,192/711,139,092,417.55
  6. Step 6: Final answer
    x = 532,650,656,957.90

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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.