Home / 1,421,425.36-1,961,377.50-912,816.64

Finding the Fourth Proportional to 1,421,425.36, 1,961,377.50 and 912,816.64

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Solution

The fourth proportional to 1,421,425.36, 1,961,377.50 and 912,816.64 is: 1,259,565.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,425.36 : 1,961,377.50 = 912,816.64 : x
  2. Step 2: Convert to fraction form
    1,421,425.36/1,961,377.50 = 912,816.64/x
  3. Step 3: Cross multiply
    1,421,425.36x = 1,961,377.50 × 912,816.64
  4. Step 4: Simplify right side
    1,421,425.36x = 1,790,378,019,321.60
  5. Step 5: Solve for x
    x = 1,790,378,019,321.60/1,421,425.36
  6. Step 6: Final answer
    x = 1,259,565.27

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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.