Home / 738,899.78-1,019,739.47-412,315.48

Finding the Fourth Proportional to 738,899.78, 1,019,739.47 and 412,315.48

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Solution

The fourth proportional to 738,899.78, 1,019,739.47 and 412,315.48 is: 569,027.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,899.78 : 1,019,739.47 = 412,315.48 : x
  2. Step 2: Convert to fraction form
    738,899.78/1,019,739.47 = 412,315.48/x
  3. Step 3: Cross multiply
    738,899.78x = 1,019,739.47 × 412,315.48
  4. Step 4: Simplify right side
    738,899.78x = 420,454,364,437.07
  5. Step 5: Solve for x
    x = 420,454,364,437.07/738,899.78
  6. Step 6: Final answer
    x = 569,027.59

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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.