Home / 716,118.75-988,230.17-393,828.85

Finding the Fourth Proportional to 716,118.75, 988,230.17 and 393,828.85

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Solution

The fourth proportional to 716,118.75, 988,230.17 and 393,828.85 is: 543,476.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,118.75 : 988,230.17 = 393,828.85 : x
  2. Step 2: Convert to fraction form
    716,118.75/988,230.17 = 393,828.85/x
  3. Step 3: Cross multiply
    716,118.75x = 988,230.17 × 393,828.85
  4. Step 4: Simplify right side
    716,118.75x = 389,193,549,900.40
  5. Step 5: Solve for x
    x = 389,193,549,900.40/716,118.75
  6. Step 6: Final answer
    x = 543,476.27

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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.