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Finding the Fourth Proportional to 718,991.46, 992,567.77 and 447,146.93

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Solution

The fourth proportional to 718,991.46, 992,567.77 and 447,146.93 is: 617,286.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,991.46 : 992,567.77 = 447,146.93 : x
  2. Step 2: Convert to fraction form
    718,991.46/992,567.77 = 447,146.93/x
  3. Step 3: Cross multiply
    718,991.46x = 992,567.77 × 447,146.93
  4. Step 4: Simplify right side
    718,991.46x = 443,823,632,536.00
  5. Step 5: Solve for x
    x = 443,823,632,536.00/718,991.46
  6. Step 6: Final answer
    x = 617,286.38

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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.