Home / 919,303,390.70-1,378,955,086.05-305,949,617.90

Finding the Fourth Proportional to 919,303,390.70, 1,378,955,086.05 and 305,949,617.90

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Solution

The fourth proportional to 919,303,390.70, 1,378,955,086.05 and 305,949,617.90 is: 458,924,426.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,303,390.70 : 1,378,955,086.05 = 305,949,617.90 : x
  2. Step 2: Convert to fraction form
    919,303,390.70/1,378,955,086.05 = 305,949,617.90/x
  3. Step 3: Cross multiply
    919,303,390.70x = 1,378,955,086.05 × 305,949,617.90
  4. Step 4: Simplify right side
    919,303,390.70x = 421,890,781,678,259,072
  5. Step 5: Solve for x
    x = 421,890,781,678,259,072/919,303,390.70
  6. Step 6: Final answer
    x = 458,924,426.85

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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.