Home / 442,959,809.40-664,439,714.10-212,873,412.60

Finding the Fourth Proportional to 442,959,809.40, 664,439,714.10 and 212,873,412.60

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Solution

The fourth proportional to 442,959,809.40, 664,439,714.10 and 212,873,412.60 is: 319,310,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,959,809.40 : 664,439,714.10 = 212,873,412.60 : x
  2. Step 2: Convert to fraction form
    442,959,809.40/664,439,714.10 = 212,873,412.60/x
  3. Step 3: Cross multiply
    442,959,809.40x = 664,439,714.10 × 212,873,412.60
  4. Step 4: Simplify right side
    442,959,809.40x = 141,441,549,407,435,344
  5. Step 5: Solve for x
    x = 141,441,549,407,435,344/442,959,809.40
  6. Step 6: Final answer
    x = 319,310,118.90

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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.