Home / 716,056.85-988,132.88-393,764.13

Finding the Fourth Proportional to 716,056.85, 988,132.88 and 393,764.13

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Solution

The fourth proportional to 716,056.85, 988,132.88 and 393,764.13 is: 543,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,056.85 : 988,132.88 = 393,764.13 : x
  2. Step 2: Convert to fraction form
    716,056.85/988,132.88 = 393,764.13/x
  3. Step 3: Cross multiply
    716,056.85x = 988,132.88 × 393,764.13
  4. Step 4: Simplify right side
    716,056.85x = 389,091,281,848.77
  5. Step 5: Solve for x
    x = 389,091,281,848.77/716,056.85
  6. Step 6: Final answer
    x = 543,380.44

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Double scale
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Similar ratio
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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.