Home / 431,126,689.15-646,680,696.45-120,226,009.56

Finding the Fourth Proportional to 431,126,689.15, 646,680,696.45 and 120,226,009.56

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Solution

The fourth proportional to 431,126,689.15, 646,680,696.45 and 120,226,009.56 is: 180,336,410.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,126,689.15 : 646,680,696.45 = 120,226,009.56 : x
  2. Step 2: Convert to fraction form
    431,126,689.15/646,680,696.45 = 120,226,009.56/x
  3. Step 3: Cross multiply
    431,126,689.15x = 646,680,696.45 × 120,226,009.56
  4. Step 4: Simplify right side
    431,126,689.15x = 77,747,839,593,665,168
  5. Step 5: Solve for x
    x = 77,747,839,593,665,168/431,126,689.15
  6. Step 6: Final answer
    x = 180,336,410.50

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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.