Home / 753,610.20-1,133,039.70-638,136.60

Finding the Fourth Proportional to 753,610.20, 1,133,039.70 and 638,136.60

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Solution

The fourth proportional to 753,610.20, 1,133,039.70 and 638,136.60 is: 959,427.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,610.20 : 1,133,039.70 = 638,136.60 : x
  2. Step 2: Convert to fraction form
    753,610.20/1,133,039.70 = 638,136.60/x
  3. Step 3: Cross multiply
    753,610.20x = 1,133,039.70 × 638,136.60
  4. Step 4: Simplify right side
    753,610.20x = 723,034,101,823.02
  5. Step 5: Solve for x
    x = 723,034,101,823.02/753,610.20
  6. Step 6: Final answer
    x = 959,427.17

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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.