Home / 420,299,156.54-629,901,890.31-171,013,898.49

Finding the Fourth Proportional to 420,299,156.54, 629,901,890.31 and 171,013,898.49

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Solution

The fourth proportional to 420,299,156.54, 629,901,890.31 and 171,013,898.49 is: 256,298,344.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,299,156.54 : 629,901,890.31 = 171,013,898.49 : x
  2. Step 2: Convert to fraction form
    420,299,156.54/629,901,890.31 = 171,013,898.49/x
  3. Step 3: Cross multiply
    420,299,156.54x = 629,901,890.31 × 171,013,898.49
  4. Step 4: Simplify right side
    420,299,156.54x = 107,721,977,928,133,456
  5. Step 5: Solve for x
    x = 107,721,977,928,133,456/420,299,156.54
  6. Step 6: Final answer
    x = 256,298,344.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.