Home / 398,698,857.20-598,160,260.20-194,233,602.80

Finding the Fourth Proportional to 398,698,857.20, 598,160,260.20 and 194,233,602.80

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Solution

The fourth proportional to 398,698,857.20, 598,160,260.20 and 194,233,602.80 is: 291,404,954.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,698,857.20 : 598,160,260.20 = 194,233,602.80 : x
  2. Step 2: Convert to fraction form
    398,698,857.20/598,160,260.20 = 194,233,602.80/x
  3. Step 3: Cross multiply
    398,698,857.20x = 598,160,260.20 × 194,233,602.80
  4. Step 4: Simplify right side
    398,698,857.20x = 116,182,822,390,431,472
  5. Step 5: Solve for x
    x = 116,182,822,390,431,472/398,698,857.20
  6. Step 6: Final answer
    x = 291,404,954.62

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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.