Home / 1,395,890.42-1,925,838.21-912,738.38

Finding the Fourth Proportional to 1,395,890.42, 1,925,838.21 and 912,738.38

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Solution

The fourth proportional to 1,395,890.42, 1,925,838.21 and 912,738.38 is: 1,259,258.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,890.42 : 1,925,838.21 = 912,738.38 : x
  2. Step 2: Convert to fraction form
    1,395,890.42/1,925,838.21 = 912,738.38/x
  3. Step 3: Cross multiply
    1,395,890.42x = 1,925,838.21 × 912,738.38
  4. Step 4: Simplify right side
    1,395,890.42x = 1,757,786,438,308.31
  5. Step 5: Solve for x
    x = 1,757,786,438,308.31/1,395,890.42
  6. Step 6: Final answer
    x = 1,259,258.19

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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.