Home / 1,387,883.24-2,080,218.46-638,356.20

Finding the Fourth Proportional to 1,387,883.24, 2,080,218.46 and 638,356.20

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Solution

The fourth proportional to 1,387,883.24, 2,080,218.46 and 638,356.20 is: 956,795.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,883.24 : 2,080,218.46 = 638,356.20 : x
  2. Step 2: Convert to fraction form
    1,387,883.24/2,080,218.46 = 638,356.20/x
  3. Step 3: Cross multiply
    1,387,883.24x = 2,080,218.46 × 638,356.20
  4. Step 4: Simplify right side
    1,387,883.24x = 1,327,920,351,295.45
  5. Step 5: Solve for x
    x = 1,327,920,351,295.45/1,387,883.24
  6. Step 6: Final answer
    x = 956,795.44

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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.