Home / 1,284,362.70-1,772,398.35-711,390.57

Finding the Fourth Proportional to 1,284,362.70, 1,772,398.35 and 711,390.57

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Solution

The fourth proportional to 1,284,362.70, 1,772,398.35 and 711,390.57 is: 981,706.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,362.70 : 1,772,398.35 = 711,390.57 : x
  2. Step 2: Convert to fraction form
    1,284,362.70/1,772,398.35 = 711,390.57/x
  3. Step 3: Cross multiply
    1,284,362.70x = 1,772,398.35 × 711,390.57
  4. Step 4: Simplify right side
    1,284,362.70x = 1,260,867,472,473.56
  5. Step 5: Solve for x
    x = 1,260,867,472,473.56/1,284,362.70
  6. Step 6: Final answer
    x = 981,706.70

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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.