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Finding the Fourth Proportional to 718,993.76, 992,570.93 and 447,149.22

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Solution

The fourth proportional to 718,993.76, 992,570.93 and 447,149.22 is: 617,289.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,993.76 : 992,570.93 = 447,149.22 : x
  2. Step 2: Convert to fraction form
    718,993.76/992,570.93 = 447,149.22/x
  3. Step 3: Cross multiply
    718,993.76x = 992,570.93 × 447,149.22
  4. Step 4: Simplify right side
    718,993.76x = 443,827,314,908.43
  5. Step 5: Solve for x
    x = 443,827,314,908.43/718,993.76
  6. Step 6: Final answer
    x = 617,289.53

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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.