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Finding the Fourth Proportional to 885,809.60, 1,328,714.40 and 412,542.80

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Solution

The fourth proportional to 885,809.60, 1,328,714.40 and 412,542.80 is: 618,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,809.60 : 1,328,714.40 = 412,542.80 : x
  2. Step 2: Convert to fraction form
    885,809.60/1,328,714.40 = 412,542.80/x
  3. Step 3: Cross multiply
    885,809.60x = 1,328,714.40 × 412,542.80
  4. Step 4: Simplify right side
    885,809.60x = 548,151,558,976.32
  5. Step 5: Solve for x
    x = 548,151,558,976.32/885,809.60
  6. Step 6: Final answer
    x = 618,814.20

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Similar ratio
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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.