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Finding the Fourth Proportional to 804,590.20, 1,207,662.90 and 489,662.20

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Solution

The fourth proportional to 804,590.20, 1,207,662.90 and 489,662.20 is: 734,966.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,590.20 : 1,207,662.90 = 489,662.20 : x
  2. Step 2: Convert to fraction form
    804,590.20/1,207,662.90 = 489,662.20/x
  3. Step 3: Cross multiply
    804,590.20x = 1,207,662.90 × 489,662.20
  4. Step 4: Simplify right side
    804,590.20x = 591,346,872,472.38
  5. Step 5: Solve for x
    x = 591,346,872,472.38/804,590.20
  6. Step 6: Final answer
    x = 734,966.54

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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.