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Finding the Fourth Proportional to 425,785.20, 637,954.82 and 256,950.76

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Solution

The fourth proportional to 425,785.20, 637,954.82 and 256,950.76 is: 384,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,785.20 : 637,954.82 = 256,950.76 : x
  2. Step 2: Convert to fraction form
    425,785.20/637,954.82 = 256,950.76/x
  3. Step 3: Cross multiply
    425,785.20x = 637,954.82 × 256,950.76
  4. Step 4: Simplify right side
    425,785.20x = 163,922,974,559.91
  5. Step 5: Solve for x
    x = 163,922,974,559.91/425,785.20
  6. Step 6: Final answer
    x = 384,989.84

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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.