Home / 1,280,678.62-1,767,437.03-729,417.73

Finding the Fourth Proportional to 1,280,678.62, 1,767,437.03 and 729,417.73

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Solution

The fourth proportional to 1,280,678.62, 1,767,437.03 and 729,417.73 is: 1,006,653.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,678.62 : 1,767,437.03 = 729,417.73 : x
  2. Step 2: Convert to fraction form
    1,280,678.62/1,767,437.03 = 729,417.73/x
  3. Step 3: Cross multiply
    1,280,678.62x = 1,767,437.03 × 729,417.73
  4. Step 4: Simplify right side
    1,280,678.62x = 1,289,199,906,340.54
  5. Step 5: Solve for x
    x = 1,289,199,906,340.54/1,280,678.62
  6. Step 6: Final answer
    x = 1,006,653.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.