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Finding the Fourth Proportional to 629,639.60, 944,689.80 and 255,700.40

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Solution

The fourth proportional to 629,639.60, 944,689.80 and 255,700.40 is: 383,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,639.60 : 944,689.80 = 255,700.40 : x
  2. Step 2: Convert to fraction form
    629,639.60/944,689.80 = 255,700.40/x
  3. Step 3: Cross multiply
    629,639.60x = 944,689.80 × 255,700.40
  4. Step 4: Simplify right side
    629,639.60x = 241,557,559,735.92
  5. Step 5: Solve for x
    x = 241,557,559,735.92/629,639.60
  6. Step 6: Final answer
    x = 383,644.17

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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.