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Finding the Fourth Proportional to 609,135.93, 840,217.68 and 488,566.62

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Solution

The fourth proportional to 609,135.93, 840,217.68 and 488,566.62 is: 673,909.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,135.93 : 840,217.68 = 488,566.62 : x
  2. Step 2: Convert to fraction form
    609,135.93/840,217.68 = 488,566.62/x
  3. Step 3: Cross multiply
    609,135.93x = 840,217.68 × 488,566.62
  4. Step 4: Simplify right side
    609,135.93x = 410,502,311,981.84
  5. Step 5: Solve for x
    x = 410,502,311,981.84/609,135.93
  6. Step 6: Final answer
    x = 673,909.21

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.