Home / 683,947.16-943,817.76-378,007.72

Finding the Fourth Proportional to 683,947.16, 943,817.76 and 378,007.72

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Solution

The fourth proportional to 683,947.16, 943,817.76 and 378,007.72 is: 521,634.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,947.16 : 943,817.76 = 378,007.72 : x
  2. Step 2: Convert to fraction form
    683,947.16/943,817.76 = 378,007.72/x
  3. Step 3: Cross multiply
    683,947.16x = 943,817.76 × 378,007.72
  4. Step 4: Simplify right side
    683,947.16x = 356,770,399,553.11
  5. Step 5: Solve for x
    x = 356,770,399,553.11/683,947.16
  6. Step 6: Final answer
    x = 521,634.45

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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.