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Finding the Fourth Proportional to 808,841.70, 1,214,246.70 and 409,276.80

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Solution

The fourth proportional to 808,841.70, 1,214,246.70 and 409,276.80 is: 614,413.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,841.70 : 1,214,246.70 = 409,276.80 : x
  2. Step 2: Convert to fraction form
    808,841.70/1,214,246.70 = 409,276.80/x
  3. Step 3: Cross multiply
    808,841.70x = 1,214,246.70 × 409,276.80
  4. Step 4: Simplify right side
    808,841.70x = 496,963,003,786.56
  5. Step 5: Solve for x
    x = 496,963,003,786.56/808,841.70
  6. Step 6: Final answer
    x = 614,413.18

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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.