Home / 440,287,985.23-660,432,100.89-129,395,584.64

Finding the Fourth Proportional to 440,287,985.23, 660,432,100.89 and 129,395,584.64

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Solution

The fourth proportional to 440,287,985.23, 660,432,100.89 and 129,395,584.64 is: 194,093,413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,287,985.23 : 660,432,100.89 = 129,395,584.64 : x
  2. Step 2: Convert to fraction form
    440,287,985.23/660,432,100.89 = 129,395,584.64/x
  3. Step 3: Cross multiply
    440,287,985.23x = 660,432,100.89 × 129,395,584.64
  4. Step 4: Simplify right side
    440,287,985.23x = 85,456,997,809,685,008
  5. Step 5: Solve for x
    x = 85,456,997,809,685,008/440,287,985.23
  6. Step 6: Final answer
    x = 194,093,413.12

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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.