Home / 1,287,893,369.66-1,931,430,499.86-414,291,383.96

Finding the Fourth Proportional to 1,287,893,369.66, 1,931,430,499.86 and 414,291,383.96

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Solution

The fourth proportional to 1,287,893,369.66, 1,931,430,499.86 and 414,291,383.96 is: 621,305,329.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,893,369.66 : 1,931,430,499.86 = 414,291,383.96 : x
  2. Step 2: Convert to fraction form
    1,287,893,369.66/1,931,430,499.86 = 414,291,383.96/x
  3. Step 3: Cross multiply
    1,287,893,369.66x = 1,931,430,499.86 × 414,291,383.96
  4. Step 4: Simplify right side
    1,287,893,369.66x = 800,175,014,809,553,920
  5. Step 5: Solve for x
    x = 800,175,014,809,553,920/1,287,893,369.66
  6. Step 6: Final answer
    x = 621,305,329.82

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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.