Home / 398,686,112.70-598,141,143.45-194,220,858.30

Finding the Fourth Proportional to 398,686,112.70, 598,141,143.45 and 194,220,858.30

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Solution

The fourth proportional to 398,686,112.70, 598,141,143.45 and 194,220,858.30 is: 291,385,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,686,112.70 : 598,141,143.45 = 194,220,858.30 : x
  2. Step 2: Convert to fraction form
    398,686,112.70/598,141,143.45 = 194,220,858.30/x
  3. Step 3: Cross multiply
    398,686,112.70x = 598,141,143.45 × 194,220,858.30
  4. Step 4: Simplify right side
    398,686,112.70x = 116,171,486,265,402,432
  5. Step 5: Solve for x
    x = 116,171,486,265,402,432/398,686,112.70
  6. Step 6: Final answer
    x = 291,385,836.04

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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.