Home / 428,152,087.80-642,228,131.70-299,011,924.80

Finding the Fourth Proportional to 428,152,087.80, 642,228,131.70 and 299,011,924.80

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Solution

The fourth proportional to 428,152,087.80, 642,228,131.70 and 299,011,924.80 is: 448,517,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,152,087.80 : 642,228,131.70 = 299,011,924.80 : x
  2. Step 2: Convert to fraction form
    428,152,087.80/642,228,131.70 = 299,011,924.80/x
  3. Step 3: Cross multiply
    428,152,087.80x = 642,228,131.70 × 299,011,924.80
  4. Step 4: Simplify right side
    428,152,087.80x = 192,033,869,820,324,928
  5. Step 5: Solve for x
    x = 192,033,869,820,324,928/428,152,087.80
  6. Step 6: Final answer
    x = 448,517,887.20

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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.