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Finding the Fourth Proportional to 856,286,687.84, 1,181,708,111 and 479,950,231.28

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Solution

The fourth proportional to 856,286,687.84, 1,181,708,111 and 479,950,231.28 is: 662,349,525.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,286,687.84 : 1,181,708,111 = 479,950,231.28 : x
  2. Step 2: Convert to fraction form
    856,286,687.84/1,181,708,111 = 479,950,231.28/x
  3. Step 3: Cross multiply
    856,286,687.84x = 1,181,708,111 × 479,950,231.28
  4. Step 4: Simplify right side
    856,286,687.84x = 567,161,081,179,901,888
  5. Step 5: Solve for x
    x = 567,161,081,179,901,888/856,286,687.84
  6. Step 6: Final answer
    x = 662,349,525.26

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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.