Home / 671,007,983.40-1,005,913,611.90-261,968,999.40

Finding the Fourth Proportional to 671,007,983.40, 1,005,913,611.90 and 261,968,999.40

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Solution

The fourth proportional to 671,007,983.40, 1,005,913,611.90 and 261,968,999.40 is: 392,719,891.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,007,983.40 : 1,005,913,611.90 = 261,968,999.40 : x
  2. Step 2: Convert to fraction form
    671,007,983.40/1,005,913,611.90 = 261,968,999.40/x
  3. Step 3: Cross multiply
    671,007,983.40x = 1,005,913,611.90 × 261,968,999.40
  4. Step 4: Simplify right side
    671,007,983.40x = 263,518,182,392,282,944
  5. Step 5: Solve for x
    x = 263,518,182,392,282,944/671,007,983.40
  6. Step 6: Final answer
    x = 392,719,891.43

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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.