Home / 679,080.33-937,158.12-388,739.07

Finding the Fourth Proportional to 679,080.33, 937,158.12 and 388,739.07

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Solution

The fourth proportional to 679,080.33, 937,158.12 and 388,739.07 is: 536,475.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,080.33 : 937,158.12 = 388,739.07 : x
  2. Step 2: Convert to fraction form
    679,080.33/937,158.12 = 388,739.07/x
  3. Step 3: Cross multiply
    679,080.33x = 937,158.12 × 388,739.07
  4. Step 4: Simplify right side
    679,080.33x = 364,309,976,011.75
  5. Step 5: Solve for x
    x = 364,309,976,011.75/679,080.33
  6. Step 6: Final answer
    x = 536,475.52

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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.