Home / 939,234,764.52-1,296,226,109.70-521,628,690.60

Finding the Fourth Proportional to 939,234,764.52, 1,296,226,109.70 and 521,628,690.60

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Solution

The fourth proportional to 939,234,764.52, 1,296,226,109.70 and 521,628,690.60 is: 719,893,208.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,234,764.52 : 1,296,226,109.70 = 521,628,690.60 : x
  2. Step 2: Convert to fraction form
    939,234,764.52/1,296,226,109.70 = 521,628,690.60/x
  3. Step 3: Cross multiply
    939,234,764.52x = 1,296,226,109.70 × 521,628,690.60
  4. Step 4: Simplify right side
    939,234,764.52x = 676,148,728,324,343,040
  5. Step 5: Solve for x
    x = 676,148,728,324,343,040/939,234,764.52
  6. Step 6: Final answer
    x = 719,893,208.67

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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.