Home / 781,633.84-1,172,239.82-276,128.26

Finding the Fourth Proportional to 781,633.84, 1,172,239.82 and 276,128.26

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Solution

The fourth proportional to 781,633.84, 1,172,239.82 and 276,128.26 is: 414,117.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,633.84 : 1,172,239.82 = 276,128.26 : x
  2. Step 2: Convert to fraction form
    781,633.84/1,172,239.82 = 276,128.26/x
  3. Step 3: Cross multiply
    781,633.84x = 1,172,239.82 × 276,128.26
  4. Step 4: Simplify right side
    781,633.84x = 323,688,541,799.31
  5. Step 5: Solve for x
    x = 323,688,541,799.31/781,633.84
  6. Step 6: Final answer
    x = 414,117.87

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1.5x scale

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.