Home / 664,080.71-916,427.09-377,600.76

Finding the Fourth Proportional to 664,080.71, 916,427.09 and 377,600.76

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Solution

The fourth proportional to 664,080.71, 916,427.09 and 377,600.76 is: 521,086.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,080.71 : 916,427.09 = 377,600.76 : x
  2. Step 2: Convert to fraction form
    664,080.71/916,427.09 = 377,600.76/x
  3. Step 3: Cross multiply
    664,080.71x = 916,427.09 × 377,600.76
  4. Step 4: Simplify right side
    664,080.71x = 346,043,563,780.59
  5. Step 5: Solve for x
    x = 346,043,563,780.59/664,080.71
  6. Step 6: Final answer
    x = 521,086.61

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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.