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Finding the Fourth Proportional to 511,297,809.60, 766,946,714.40 and 426,267,249.60

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Solution

The fourth proportional to 511,297,809.60, 766,946,714.40 and 426,267,249.60 is: 639,400,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,297,809.60 : 766,946,714.40 = 426,267,249.60 : x
  2. Step 2: Convert to fraction form
    511,297,809.60/766,946,714.40 = 426,267,249.60/x
  3. Step 3: Cross multiply
    511,297,809.60x = 766,946,714.40 × 426,267,249.60
  4. Step 4: Simplify right side
    511,297,809.60x = 326,924,266,537,044,736
  5. Step 5: Solve for x
    x = 326,924,266,537,044,736/511,297,809.60
  6. Step 6: Final answer
    x = 639,400,874.40

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Double scale
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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.