Home / 638,946.40-881,716.39-366,822.78

Finding the Fourth Proportional to 638,946.40, 881,716.39 and 366,822.78

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Solution

The fourth proportional to 638,946.40, 881,716.39 and 366,822.78 is: 506,198.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,946.40 : 881,716.39 = 366,822.78 : x
  2. Step 2: Convert to fraction form
    638,946.40/881,716.39 = 366,822.78/x
  3. Step 3: Cross multiply
    638,946.40x = 881,716.39 × 366,822.78
  4. Step 4: Simplify right side
    638,946.40x = 323,433,653,127.87
  5. Step 5: Solve for x
    x = 323,433,653,127.87/638,946.40
  6. Step 6: Final answer
    x = 506,198.41

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1.5x scale

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.