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Finding the Fourth Proportional to 613,467.10, 920,200.65 and 545,815.90

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Solution

The fourth proportional to 613,467.10, 920,200.65 and 545,815.90 is: 818,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,467.10 : 920,200.65 = 545,815.90 : x
  2. Step 2: Convert to fraction form
    613,467.10/920,200.65 = 545,815.90/x
  3. Step 3: Cross multiply
    613,467.10x = 920,200.65 × 545,815.90
  4. Step 4: Simplify right side
    613,467.10x = 502,260,145,960.34
  5. Step 5: Solve for x
    x = 502,260,145,960.34/613,467.10
  6. Step 6: Final answer
    x = 818,723.85

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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.