Home / 428,544,010.60-642,816,015.90-137,410,570.60

Finding the Fourth Proportional to 428,544,010.60, 642,816,015.90 and 137,410,570.60

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Solution

The fourth proportional to 428,544,010.60, 642,816,015.90 and 137,410,570.60 is: 206,115,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,544,010.60 : 642,816,015.90 = 137,410,570.60 : x
  2. Step 2: Convert to fraction form
    428,544,010.60/642,816,015.90 = 137,410,570.60/x
  3. Step 3: Cross multiply
    428,544,010.60x = 642,816,015.90 × 137,410,570.60
  4. Step 4: Simplify right side
    428,544,010.60x = 88,329,715,535,637,664
  5. Step 5: Solve for x
    x = 88,329,715,535,637,664/428,544,010.60
  6. Step 6: Final answer
    x = 206,115,855.90

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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.