Home / 1,390,608.71-2,086,238.52-431,014.16

Finding the Fourth Proportional to 1,390,608.71, 2,086,238.52 and 431,014.16

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Solution

The fourth proportional to 1,390,608.71, 2,086,238.52 and 431,014.16 is: 646,622.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,608.71 : 2,086,238.52 = 431,014.16 : x
  2. Step 2: Convert to fraction form
    1,390,608.71/2,086,238.52 = 431,014.16/x
  3. Step 3: Cross multiply
    1,390,608.71x = 2,086,238.52 × 431,014.16
  4. Step 4: Simplify right side
    1,390,608.71x = 899,198,332,826.25
  5. Step 5: Solve for x
    x = 899,198,332,826.25/1,390,608.71
  6. Step 6: Final answer
    x = 646,622.11

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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.