Home / 920,320.40-1,380,709.56-731,493.20

Finding the Fourth Proportional to 920,320.40, 1,380,709.56 and 731,493.20

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Solution

The fourth proportional to 920,320.40, 1,380,709.56 and 731,493.20 is: 1,097,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,320.40 : 1,380,709.56 = 731,493.20 : x
  2. Step 2: Convert to fraction form
    920,320.40/1,380,709.56 = 731,493.20/x
  3. Step 3: Cross multiply
    920,320.40x = 1,380,709.56 × 731,493.20
  4. Step 4: Simplify right side
    920,320.40x = 1,009,979,654,314.99
  5. Step 5: Solve for x
    x = 1,009,979,654,314.99/920,320.40
  6. Step 6: Final answer
    x = 1,097,421.78

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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.