Home / 398,706,875.70-598,172,287.95-194,241,621.30

Finding the Fourth Proportional to 398,706,875.70, 598,172,287.95 and 194,241,621.30

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Solution

The fourth proportional to 398,706,875.70, 598,172,287.95 and 194,241,621.30 is: 291,416,983.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,706,875.70 : 598,172,287.95 = 194,241,621.30 : x
  2. Step 2: Convert to fraction form
    398,706,875.70/598,172,287.95 = 194,241,621.30/x
  3. Step 3: Cross multiply
    398,706,875.70x = 598,172,287.95 × 194,241,621.30
  4. Step 4: Simplify right side
    398,706,875.70x = 116,189,955,028,138,464
  5. Step 5: Solve for x
    x = 116,189,955,028,138,464/398,706,875.70
  6. Step 6: Final answer
    x = 291,416,983.53

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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.