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Finding the Fourth Proportional to 521,759.10, 714,632.67 and 491,119.23

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Solution

The fourth proportional to 521,759.10, 714,632.67 and 491,119.23 is: 672,666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,759.10 : 714,632.67 = 491,119.23 : x
  2. Step 2: Convert to fraction form
    521,759.10/714,632.67 = 491,119.23/x
  3. Step 3: Cross multiply
    521,759.10x = 714,632.67 × 491,119.23
  4. Step 4: Simplify right side
    521,759.10x = 350,969,846,623.24
  5. Step 5: Solve for x
    x = 350,969,846,623.24/521,759.10
  6. Step 6: Final answer
    x = 672,666.46

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.