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Finding the Fourth Proportional to 629,719.60, 944,809.80 and 255,780.40

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Solution

The fourth proportional to 629,719.60, 944,809.80 and 255,780.40 is: 383,764.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,719.60 : 944,809.80 = 255,780.40 : x
  2. Step 2: Convert to fraction form
    629,719.60/944,809.80 = 255,780.40/x
  3. Step 3: Cross multiply
    629,719.60x = 944,809.80 × 255,780.40
  4. Step 4: Simplify right side
    629,719.60x = 241,663,828,567.92
  5. Step 5: Solve for x
    x = 241,663,828,567.92/629,719.60
  6. Step 6: Final answer
    x = 383,764.18

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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.