Home / 639,790,666.70-882,912,321.26-357,533,109.50

Finding the Fourth Proportional to 639,790,666.70, 882,912,321.26 and 357,533,109.50

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Solution

The fourth proportional to 639,790,666.70, 882,912,321.26 and 357,533,109.50 is: 493,396,362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,790,666.70 : 882,912,321.26 = 357,533,109.50 : x
  2. Step 2: Convert to fraction form
    639,790,666.70/882,912,321.26 = 357,533,109.50/x
  3. Step 3: Cross multiply
    639,790,666.70x = 882,912,321.26 × 357,533,109.50
  4. Step 4: Simplify right side
    639,790,666.70x = 315,670,387,629,748,544
  5. Step 5: Solve for x
    x = 315,670,387,629,748,544/639,790,666.70
  6. Step 6: Final answer
    x = 493,396,362.38

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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.