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Finding the Fourth Proportional to 804,549.40, 1,207,601.70 and 405,640.60

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Solution

The fourth proportional to 804,549.40, 1,207,601.70 and 405,640.60 is: 608,852.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,549.40 : 1,207,601.70 = 405,640.60 : x
  2. Step 2: Convert to fraction form
    804,549.40/1,207,601.70 = 405,640.60/x
  3. Step 3: Cross multiply
    804,549.40x = 1,207,601.70 × 405,640.60
  4. Step 4: Simplify right side
    804,549.40x = 489,852,278,149.02
  5. Step 5: Solve for x
    x = 489,852,278,149.02/804,549.40
  6. Step 6: Final answer
    x = 608,852.95

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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.