Home / 716,120.17-988,226.11-393,830.23

Finding the Fourth Proportional to 716,120.17, 988,226.11 and 393,830.23

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Solution

The fourth proportional to 716,120.17, 988,226.11 and 393,830.23 is: 543,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,120.17 : 988,226.11 = 393,830.23 : x
  2. Step 2: Convert to fraction form
    716,120.17/988,226.11 = 393,830.23/x
  3. Step 3: Cross multiply
    716,120.17x = 988,226.11 × 393,830.23
  4. Step 4: Simplify right side
    716,120.17x = 389,193,317,679.30
  5. Step 5: Solve for x
    x = 389,193,317,679.30/716,120.17
  6. Step 6: Final answer
    x = 543,474.87

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Double scale
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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.