Home / 804,838.60-1,207,257.90-521,403.40

Finding the Fourth Proportional to 804,838.60, 1,207,257.90 and 521,403.40

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Solution

The fourth proportional to 804,838.60, 1,207,257.90 and 521,403.40 is: 782,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,838.60 : 1,207,257.90 = 521,403.40 : x
  2. Step 2: Convert to fraction form
    804,838.60/1,207,257.90 = 521,403.40/x
  3. Step 3: Cross multiply
    804,838.60x = 1,207,257.90 × 521,403.40
  4. Step 4: Simplify right side
    804,838.60x = 629,468,373,736.86
  5. Step 5: Solve for x
    x = 629,468,373,736.86/804,838.60
  6. Step 6: Final answer
    x = 782,105.10

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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.