Home / 920,784.64-1,380,814.08-447,329.92

Finding the Fourth Proportional to 920,784.64, 1,380,814.08 and 447,329.92

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Solution

The fourth proportional to 920,784.64, 1,380,814.08 and 447,329.92 is: 670,818.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,784.64 : 1,380,814.08 = 447,329.92 : x
  2. Step 2: Convert to fraction form
    920,784.64/1,380,814.08 = 447,329.92/x
  3. Step 3: Cross multiply
    920,784.64x = 1,380,814.08 × 447,329.92
  4. Step 4: Simplify right side
    920,784.64x = 617,679,451,941.27
  5. Step 5: Solve for x
    x = 617,679,451,941.27/920,784.64
  6. Step 6: Final answer
    x = 670,818.59

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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.