Home / 763,121,761.20-1,145,060,555.40-435,848,583.60

Finding the Fourth Proportional to 763,121,761.20, 1,145,060,555.40 and 435,848,583.60

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Solution

The fourth proportional to 763,121,761.20, 1,145,060,555.40 and 435,848,583.60 is: 653,988,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,121,761.20 : 1,145,060,555.40 = 435,848,583.60 : x
  2. Step 2: Convert to fraction form
    763,121,761.20/1,145,060,555.40 = 435,848,583.60/x
  3. Step 3: Cross multiply
    763,121,761.20x = 1,145,060,555.40 × 435,848,583.60
  4. Step 4: Simplify right side
    763,121,761.20x = 499,073,021,207,319,424
  5. Step 5: Solve for x
    x = 499,073,021,207,319,424/763,121,761.20
  6. Step 6: Final answer
    x = 653,988,716.59

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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.