Home / 637,091.79-879,141.38-378,954.51

Finding the Fourth Proportional to 637,091.79, 879,141.38 and 378,954.51

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Solution

The fourth proportional to 637,091.79, 879,141.38 and 378,954.51 is: 522,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,091.79 : 879,141.38 = 378,954.51 : x
  2. Step 2: Convert to fraction form
    637,091.79/879,141.38 = 378,954.51/x
  3. Step 3: Cross multiply
    637,091.79x = 879,141.38 × 378,954.51
  4. Step 4: Simplify right side
    637,091.79x = 333,154,588,983.85
  5. Step 5: Solve for x
    x = 333,154,588,983.85/637,091.79
  6. Step 6: Final answer
    x = 522,930.28

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Double scale
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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.