Home / 419,631,731.59-579,081,644.98-231,455,984.21

Finding the Fourth Proportional to 419,631,731.59, 579,081,644.98 and 231,455,984.21

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Solution

The fourth proportional to 419,631,731.59, 579,081,644.98 and 231,455,984.21 is: 319,403,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,631,731.59 : 579,081,644.98 = 231,455,984.21 : x
  2. Step 2: Convert to fraction form
    419,631,731.59/579,081,644.98 = 231,455,984.21/x
  3. Step 3: Cross multiply
    419,631,731.59x = 579,081,644.98 × 231,455,984.21
  4. Step 4: Simplify right side
    419,631,731.59x = 134,031,912,076,791,712
  5. Step 5: Solve for x
    x = 134,031,912,076,791,712/419,631,731.59
  6. Step 6: Final answer
    x = 319,403,662.75

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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.