Home / 1,387,199.28-2,080,798.89-389,927.28

Finding the Fourth Proportional to 1,387,199.28, 2,080,798.89 and 389,927.28

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Solution

The fourth proportional to 1,387,199.28, 2,080,798.89 and 389,927.28 is: 584,890.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,199.28 : 2,080,798.89 = 389,927.28 : x
  2. Step 2: Convert to fraction form
    1,387,199.28/2,080,798.89 = 389,927.28/x
  3. Step 3: Cross multiply
    1,387,199.28x = 2,080,798.89 × 389,927.28
  4. Step 4: Simplify right side
    1,387,199.28x = 811,360,251,404.72
  5. Step 5: Solve for x
    x = 811,360,251,404.72/1,387,199.28
  6. Step 6: Final answer
    x = 584,890.91

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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.