Home / 711,375,356.91-981,676,907.88-393,849,754.34

Finding the Fourth Proportional to 711,375,356.91, 981,676,907.88 and 393,849,754.34

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Solution

The fourth proportional to 711,375,356.91, 981,676,907.88 and 393,849,754.34 is: 543,500,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,375,356.91 : 981,676,907.88 = 393,849,754.34 : x
  2. Step 2: Convert to fraction form
    711,375,356.91/981,676,907.88 = 393,849,754.34/x
  3. Step 3: Cross multiply
    711,375,356.91x = 981,676,907.88 × 393,849,754.34
  4. Step 4: Simplify right side
    711,375,356.91x = 386,633,209,009,788,800
  5. Step 5: Solve for x
    x = 386,633,209,009,788,800/711,375,356.91
  6. Step 6: Final answer
    x = 543,500,987.56

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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.