Home / 291,748.40-437,622.60-289,905.20

Finding the Fourth Proportional to 291,748.40, 437,622.60 and 289,905.20

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Solution

The fourth proportional to 291,748.40, 437,622.60 and 289,905.20 is: 434,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,748.40 : 437,622.60 = 289,905.20 : x
  2. Step 2: Convert to fraction form
    291,748.40/437,622.60 = 289,905.20/x
  3. Step 3: Cross multiply
    291,748.40x = 437,622.60 × 289,905.20
  4. Step 4: Simplify right side
    291,748.40x = 126,869,067,377.52
  5. Step 5: Solve for x
    x = 126,869,067,377.52/291,748.40
  6. Step 6: Final answer
    x = 434,857.80

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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.