Home / 407,961,689.40-612,061,915.14-131,607,587.16

Finding the Fourth Proportional to 407,961,689.40, 612,061,915.14 and 131,607,587.16

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Solution

The fourth proportional to 407,961,689.40, 612,061,915.14 and 131,607,587.16 is: 197,449,892.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,961,689.40 : 612,061,915.14 = 131,607,587.16 : x
  2. Step 2: Convert to fraction form
    407,961,689.40/612,061,915.14 = 131,607,587.16/x
  3. Step 3: Cross multiply
    407,961,689.40x = 612,061,915.14 × 131,607,587.16
  4. Step 4: Simplify right side
    407,961,689.40x = 80,551,991,844,104,064
  5. Step 5: Solve for x
    x = 80,551,991,844,104,064/407,961,689.40
  6. Step 6: Final answer
    x = 197,449,892.81

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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.