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Finding the Fourth Proportional to 555,446.39, 766,090.76 and 383,651.86

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Solution

The fourth proportional to 555,446.39, 766,090.76 and 383,651.86 is: 529,145.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,446.39 : 766,090.76 = 383,651.86 : x
  2. Step 2: Convert to fraction form
    555,446.39/766,090.76 = 383,651.86/x
  3. Step 3: Cross multiply
    555,446.39x = 766,090.76 × 383,651.86
  4. Step 4: Simplify right side
    555,446.39x = 293,912,141,172.36
  5. Step 5: Solve for x
    x = 293,912,141,172.36/555,446.39
  6. Step 6: Final answer
    x = 529,145.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.