Home / 716,120.75-988,232.93-393,830.85

Finding the Fourth Proportional to 716,120.75, 988,232.93 and 393,830.85

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Solution

The fourth proportional to 716,120.75, 988,232.93 and 393,830.85 is: 543,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,120.75 : 988,232.93 = 393,830.85 : x
  2. Step 2: Convert to fraction form
    716,120.75/988,232.93 = 393,830.85/x
  3. Step 3: Cross multiply
    716,120.75x = 988,232.93 × 393,830.85
  4. Step 4: Simplify right side
    716,120.75x = 389,196,614,819.89
  5. Step 5: Solve for x
    x = 389,196,614,819.89/716,120.75
  6. Step 6: Final answer
    x = 543,479.04

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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.