Home / 426,352,516.60-639,589,780.62-131,272,603.36

Finding the Fourth Proportional to 426,352,516.60, 639,589,780.62 and 131,272,603.36

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Solution

The fourth proportional to 426,352,516.60, 639,589,780.62 and 131,272,603.36 is: 196,927,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,352,516.60 : 639,589,780.62 = 131,272,603.36 : x
  2. Step 2: Convert to fraction form
    426,352,516.60/639,589,780.62 = 131,272,603.36/x
  3. Step 3: Cross multiply
    426,352,516.60x = 639,589,780.62 × 131,272,603.36
  4. Step 4: Simplify right side
    426,352,516.60x = 83,960,615,584,438,672
  5. Step 5: Solve for x
    x = 83,960,615,584,438,672/426,352,516.60
  6. Step 6: Final answer
    x = 196,927,688.51

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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.