Home / 820,473.46-1,230,854.64-280,602.82

Finding the Fourth Proportional to 820,473.46, 1,230,854.64 and 280,602.82

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Solution

The fourth proportional to 820,473.46, 1,230,854.64 and 280,602.82 is: 420,953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,473.46 : 1,230,854.64 = 280,602.82 : x
  2. Step 2: Convert to fraction form
    820,473.46/1,230,854.64 = 280,602.82/x
  3. Step 3: Cross multiply
    820,473.46x = 1,230,854.64 × 280,602.82
  4. Step 4: Simplify right side
    820,473.46x = 345,381,282,994.09
  5. Step 5: Solve for x
    x = 345,381,282,994.09/820,473.46
  6. Step 6: Final answer
    x = 420,953.63

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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.