Home / 1,286,455.36-1,928,321.16-432,714.28

Finding the Fourth Proportional to 1,286,455.36, 1,928,321.16 and 432,714.28

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Solution

The fourth proportional to 1,286,455.36, 1,928,321.16 and 432,714.28 is: 648,613.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,455.36 : 1,928,321.16 = 432,714.28 : x
  2. Step 2: Convert to fraction form
    1,286,455.36/1,928,321.16 = 432,714.28/x
  3. Step 3: Cross multiply
    1,286,455.36x = 1,928,321.16 × 432,714.28
  4. Step 4: Simplify right side
    1,286,455.36x = 834,412,102,358.17
  5. Step 5: Solve for x
    x = 834,412,102,358.17/1,286,455.36
  6. Step 6: Final answer
    x = 648,613.34

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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.