Home / 428,029,410.40-642,065,110.80-223,956,066.40

Finding the Fourth Proportional to 428,029,410.40, 642,065,110.80 and 223,956,066.40

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Solution

The fourth proportional to 428,029,410.40, 642,065,110.80 and 223,956,066.40 is: 335,945,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,029,410.40 : 642,065,110.80 = 223,956,066.40 : x
  2. Step 2: Convert to fraction form
    428,029,410.40/642,065,110.80 = 223,956,066.40/x
  3. Step 3: Cross multiply
    428,029,410.40x = 642,065,110.80 × 223,956,066.40
  4. Step 4: Simplify right side
    428,029,410.40x = 143,794,376,587,448,144
  5. Step 5: Solve for x
    x = 143,794,376,587,448,144/428,029,410.40
  6. Step 6: Final answer
    x = 335,945,084.83

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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.