Home / 948,540.12-1,308,975.84-518,828.64

Finding the Fourth Proportional to 948,540.12, 1,308,975.84 and 518,828.64

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Solution

The fourth proportional to 948,540.12, 1,308,975.84 and 518,828.64 is: 715,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,540.12 : 1,308,975.84 = 518,828.64 : x
  2. Step 2: Convert to fraction form
    948,540.12/1,308,975.84 = 518,828.64/x
  3. Step 3: Cross multiply
    948,540.12x = 1,308,975.84 × 518,828.64
  4. Step 4: Simplify right side
    948,540.12x = 679,134,154,860.06
  5. Step 5: Solve for x
    x = 679,134,154,860.06/948,540.12
  6. Step 6: Final answer
    x = 715,978.31

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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.