Home / 1,387,572.75-2,081,583.45-427,803.70

Finding the Fourth Proportional to 1,387,572.75, 2,081,583.45 and 427,803.70

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Solution

The fourth proportional to 1,387,572.75, 2,081,583.45 and 427,803.70 is: 641,774.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,572.75 : 2,081,583.45 = 427,803.70 : x
  2. Step 2: Convert to fraction form
    1,387,572.75/2,081,583.45 = 427,803.70/x
  3. Step 3: Cross multiply
    1,387,572.75x = 2,081,583.45 × 427,803.70
  4. Step 4: Simplify right side
    1,387,572.75x = 890,509,105,903.21
  5. Step 5: Solve for x
    x = 890,509,105,903.21/1,387,572.75
  6. Step 6: Final answer
    x = 641,774.71

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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.