Home / 920,181.60-1,380,337.20-521,013.60

Finding the Fourth Proportional to 920,181.60, 1,380,337.20 and 521,013.60

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Solution

The fourth proportional to 920,181.60, 1,380,337.20 and 521,013.60 is: 781,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,181.60 : 1,380,337.20 = 521,013.60 : x
  2. Step 2: Convert to fraction form
    920,181.60/1,380,337.20 = 521,013.60/x
  3. Step 3: Cross multiply
    920,181.60x = 1,380,337.20 × 521,013.60
  4. Step 4: Simplify right side
    920,181.60x = 719,174,453,785.92
  5. Step 5: Solve for x
    x = 719,174,453,785.92/920,181.60
  6. Step 6: Final answer
    x = 781,557.09

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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.