Home / 1,040,800.78-1,561,430.81-442,273.56

Finding the Fourth Proportional to 1,040,800.78, 1,561,430.81 and 442,273.56

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Solution

The fourth proportional to 1,040,800.78, 1,561,430.81 and 442,273.56 is: 663,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,800.78 : 1,561,430.81 = 442,273.56 : x
  2. Step 2: Convert to fraction form
    1,040,800.78/1,561,430.81 = 442,273.56/x
  3. Step 3: Cross multiply
    1,040,800.78x = 1,561,430.81 × 442,273.56
  4. Step 4: Simplify right side
    1,040,800.78x = 690,579,563,032.38
  5. Step 5: Solve for x
    x = 690,579,563,032.38/1,040,800.78
  6. Step 6: Final answer
    x = 663,507.92

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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.