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Finding the Fourth Proportional to 629,638.60, 944,688.30 and 255,699.40

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Solution

The fourth proportional to 629,638.60, 944,688.30 and 255,699.40 is: 383,642.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,638.60 : 944,688.30 = 255,699.40 : x
  2. Step 2: Convert to fraction form
    629,638.60/944,688.30 = 255,699.40/x
  3. Step 3: Cross multiply
    629,638.60x = 944,688.30 × 255,699.40
  4. Step 4: Simplify right side
    629,638.60x = 241,556,231,497.02
  5. Step 5: Solve for x
    x = 241,556,231,497.02/629,638.60
  6. Step 6: Final answer
    x = 383,642.67

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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.