Home / 677,136.28-1,015,409.12-256,116.91

Finding the Fourth Proportional to 677,136.28, 1,015,409.12 and 256,116.91

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Solution

The fourth proportional to 677,136.28, 1,015,409.12 and 256,116.91 is: 384,063.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,136.28 : 1,015,409.12 = 256,116.91 : x
  2. Step 2: Convert to fraction form
    677,136.28/1,015,409.12 = 256,116.91/x
  3. Step 3: Cross multiply
    677,136.28x = 1,015,409.12 × 256,116.91
  4. Step 4: Simplify right side
    677,136.28x = 260,063,441,123.17
  5. Step 5: Solve for x
    x = 260,063,441,123.17/677,136.28
  6. Step 6: Final answer
    x = 384,063.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.