Home / 716,243.27-988,416.18-393,977.88

Finding the Fourth Proportional to 716,243.27, 988,416.18 and 393,977.88

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Solution

The fourth proportional to 716,243.27, 988,416.18 and 393,977.88 is: 543,689.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,243.27 : 988,416.18 = 393,977.88 : x
  2. Step 2: Convert to fraction form
    716,243.27/988,416.18 = 393,977.88/x
  3. Step 3: Cross multiply
    716,243.27x = 988,416.18 × 393,977.88
  4. Step 4: Simplify right side
    716,243.27x = 389,414,111,154.10
  5. Step 5: Solve for x
    x = 389,414,111,154.10/716,243.27
  6. Step 6: Final answer
    x = 543,689.74

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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.