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Finding the Fourth Proportional to 389,544.58, 533,673.55 and 374,977.79

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Solution

The fourth proportional to 389,544.58, 533,673.55 and 374,977.79 is: 513,717.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,544.58 : 533,673.55 = 374,977.79 : x
  2. Step 2: Convert to fraction form
    389,544.58/533,673.55 = 374,977.79/x
  3. Step 3: Cross multiply
    389,544.58x = 533,673.55 × 374,977.79
  4. Step 4: Simplify right side
    389,544.58x = 200,115,728,360.46
  5. Step 5: Solve for x
    x = 200,115,728,360.46/389,544.58
  6. Step 6: Final answer
    x = 513,717.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.