Home / 839,889,008.10-1,259,833,512.15-666,426,665.70

Finding the Fourth Proportional to 839,889,008.10, 1,259,833,512.15 and 666,426,665.70

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Solution

The fourth proportional to 839,889,008.10, 1,259,833,512.15 and 666,426,665.70 is: 999,639,998.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,889,008.10 : 1,259,833,512.15 = 666,426,665.70 : x
  2. Step 2: Convert to fraction form
    839,889,008.10/1,259,833,512.15 = 666,426,665.70/x
  3. Step 3: Cross multiply
    839,889,008.10x = 1,259,833,512.15 × 666,426,665.70
  4. Step 4: Simplify right side
    839,889,008.10x = 839,586,646,839,245,056
  5. Step 5: Solve for x
    x = 839,586,646,839,245,056/839,889,008.10
  6. Step 6: Final answer
    x = 999,639,998.55

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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.