Home / 439,938.60-659,907.90-191,106.60

Finding the Fourth Proportional to 439,938.60, 659,907.90 and 191,106.60

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Solution

The fourth proportional to 439,938.60, 659,907.90 and 191,106.60 is: 286,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,938.60 : 659,907.90 = 191,106.60 : x
  2. Step 2: Convert to fraction form
    439,938.60/659,907.90 = 191,106.60/x
  3. Step 3: Cross multiply
    439,938.60x = 659,907.90 × 191,106.60
  4. Step 4: Simplify right side
    439,938.60x = 126,112,755,082.14
  5. Step 5: Solve for x
    x = 126,112,755,082.14/439,938.60
  6. Step 6: Final answer
    x = 286,659.90

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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.