Home / 398,708,810.20-598,175,189.70-194,243,555.80

Finding the Fourth Proportional to 398,708,810.20, 598,175,189.70 and 194,243,555.80

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Solution

The fourth proportional to 398,708,810.20, 598,175,189.70 and 194,243,555.80 is: 291,419,885.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,708,810.20 : 598,175,189.70 = 194,243,555.80 : x
  2. Step 2: Convert to fraction form
    398,708,810.20/598,175,189.70 = 194,243,555.80/x
  3. Step 3: Cross multiply
    398,708,810.20x = 598,175,189.70 × 194,243,555.80
  4. Step 4: Simplify right side
    398,708,810.20x = 116,191,675,838,667,552
  5. Step 5: Solve for x
    x = 116,191,675,838,667,552/398,708,810.20
  6. Step 6: Final answer
    x = 291,419,885.56

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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.