Home / 716,122.11-988,228.77-393,832.20

Finding the Fourth Proportional to 716,122.11, 988,228.77 and 393,832.20

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Solution

The fourth proportional to 716,122.11, 988,228.77 and 393,832.20 is: 543,477.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,122.11 : 988,228.77 = 393,832.20 : x
  2. Step 2: Convert to fraction form
    716,122.11/988,228.77 = 393,832.20/x
  3. Step 3: Cross multiply
    716,122.11x = 988,228.77 × 393,832.20
  4. Step 4: Simplify right side
    716,122.11x = 389,196,310,592.39
  5. Step 5: Solve for x
    x = 389,196,310,592.39/716,122.11
  6. Step 6: Final answer
    x = 543,477.58

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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.