Home / 716,119.11-988,224.64-393,829.20

Finding the Fourth Proportional to 716,119.11, 988,224.64 and 393,829.20

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Solution

The fourth proportional to 716,119.11, 988,224.64 and 393,829.20 is: 543,473.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,119.11 : 988,224.64 = 393,829.20 : x
  2. Step 2: Convert to fraction form
    716,119.11/988,224.64 = 393,829.20/x
  3. Step 3: Cross multiply
    716,119.11x = 988,224.64 × 393,829.20
  4. Step 4: Simplify right side
    716,119.11x = 389,191,718,406.92
  5. Step 5: Solve for x
    x = 389,191,718,406.92/716,119.11
  6. Step 6: Final answer
    x = 543,473.44

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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.