Home / 880,958,999.20-1,319,926,844.40-419,904,407.20

Finding the Fourth Proportional to 880,958,999.20, 1,319,926,844.40 and 419,904,407.20

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Solution

The fourth proportional to 880,958,999.20, 1,319,926,844.40 and 419,904,407.20 is: 629,136,088.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,958,999.20 : 1,319,926,844.40 = 419,904,407.20 : x
  2. Step 2: Convert to fraction form
    880,958,999.20/1,319,926,844.40 = 419,904,407.20/x
  3. Step 3: Cross multiply
    880,958,999.20x = 1,319,926,844.40 × 419,904,407.20
  4. Step 4: Simplify right side
    880,958,999.20x = 554,243,099,145,148,672
  5. Step 5: Solve for x
    x = 554,243,099,145,148,672/880,958,999.20
  6. Step 6: Final answer
    x = 629,136,088.79

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1.5x scale

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.