Home / 1,438,387.62-2,157,207.81-427,271.91

Finding the Fourth Proportional to 1,438,387.62, 2,157,207.81 and 427,271.91

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Solution

The fourth proportional to 1,438,387.62, 2,157,207.81 and 427,271.91 is: 640,796.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,387.62 : 2,157,207.81 = 427,271.91 : x
  2. Step 2: Convert to fraction form
    1,438,387.62/2,157,207.81 = 427,271.91/x
  3. Step 3: Cross multiply
    1,438,387.62x = 2,157,207.81 × 427,271.91
  4. Step 4: Simplify right side
    1,438,387.62x = 921,714,301,245.62
  5. Step 5: Solve for x
    x = 921,714,301,245.62/1,438,387.62
  6. Step 6: Final answer
    x = 640,796.88

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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.