Home / 398,706,875.20-598,172,287.20-194,241,620.80

Finding the Fourth Proportional to 398,706,875.20, 598,172,287.20 and 194,241,620.80

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Solution

The fourth proportional to 398,706,875.20, 598,172,287.20 and 194,241,620.80 is: 291,416,982.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,706,875.20 : 598,172,287.20 = 194,241,620.80 : x
  2. Step 2: Convert to fraction form
    398,706,875.20/598,172,287.20 = 194,241,620.80/x
  3. Step 3: Cross multiply
    398,706,875.20x = 598,172,287.20 × 194,241,620.80
  4. Step 4: Simplify right side
    398,706,875.20x = 116,189,954,583,371,104
  5. Step 5: Solve for x
    x = 116,189,954,583,371,104/398,706,875.20
  6. Step 6: Final answer
    x = 291,416,982.78

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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.