Home / 312,665,801.28-469,002,693.20-82,632,898.50

Finding the Fourth Proportional to 312,665,801.28, 469,002,693.20 and 82,632,898.50

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Solution

The fourth proportional to 312,665,801.28, 469,002,693.20 and 82,632,898.50 is: 123,950,402.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,665,801.28 : 469,002,693.20 = 82,632,898.50 : x
  2. Step 2: Convert to fraction form
    312,665,801.28/469,002,693.20 = 82,632,898.50/x
  3. Step 3: Cross multiply
    312,665,801.28x = 469,002,693.20 × 82,632,898.50
  4. Step 4: Simplify right side
    312,665,801.28x = 38,755,051,943,009,072
  5. Step 5: Solve for x
    x = 38,755,051,943,009,072/312,665,801.28
  6. Step 6: Final answer
    x = 123,950,402.58

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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.