Home / 920,960.72-1,270,975.56-518,590.16

Finding the Fourth Proportional to 920,960.72, 1,270,975.56 and 518,590.16

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Solution

The fourth proportional to 920,960.72, 1,270,975.56 and 518,590.16 is: 715,682.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,960.72 : 1,270,975.56 = 518,590.16 : x
  2. Step 2: Convert to fraction form
    920,960.72/1,270,975.56 = 518,590.16/x
  3. Step 3: Cross multiply
    920,960.72x = 1,270,975.56 × 518,590.16
  4. Step 4: Simplify right side
    920,960.72x = 659,115,419,016.49
  5. Step 5: Solve for x
    x = 659,115,419,016.49/920,960.72
  6. Step 6: Final answer
    x = 715,682.44

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1.5x scale

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.